seethe 
Lovers and madmen have such seething brains. 
5Aot., M. X. D., v. 1. 4. 
Will virtue make the pot teeth, or the Jack 
Turn a spit laden? 
Heiiieood, Fortune by Land and Sea (Works, ed. Pearson, 
[1874, VI. 374). 
2. To boil; prepare food by boiling. 
He cowde roste and xethe and broille and frie. 
Chaucer, Gen. Prol. to C. T., 1. 383. 
seether (se'THer), n. One who or that which 
seethes; a boiler; a pot for boiling. 
The fire thus forni'd, she seta the kettle on 
(Like burnish'd gold the little seether shone). 
Drijden, Baucis and Philemon, 1. 67. 
seetlllputty (se'tul-put"i), . [Also seetuljxitti ; 
< Hind, sltal-pdti, sitnl-fiatti, a fine cool mat, esp. 
the Assam mat, < sital. cool, + pdti, a mat, the 
side of a bed.] A kind of mat made especially 
in Bengal of fine grass or reeds, used to sleep 
on. 
Sefton cake. Same as ramskin. 
seg 1 (seg), w. [Also segg, sag; unassibilated form 
of sedge: see sedge 1 .} 1. Sedge (which see). 
First Car comes crown'd with osier, segs, and reed. 
Drayton, Polyolbion, i. 220. 
2. The yellow flower-de-luce, Iris I'seudacorus. 
[Now only prov. Eng.] 
seg 2 (seg), . [Also segg; not found in early 
use; prob. < Teut. \/ 'sag, cut: see sate 1 , secant, 
etc.] A castrated bull ; especially, a bull cas- 
trated when full-grown ; abull-segg. [Scotch.] 
seg 3 t, seggeH, . [ME., < AS. secg, a man, war- 
rior.] A man; a warrior. 
He slow of oure segges sothli alle the best, 
<fe conquered with dene mi ,! the king & his sone. 
William of Palerne (E. E. T. 8.), 1. 4234. 
Eury seffffe [var. seg, C] shal seyn I am sustre of jowre 
hous. Piers Plomnan (B), Hi. 63. 
seg^t, '' An obsolete form of say^. 
segar, . An improper spelling of cigar. 
seget, . An obsolete form of siege. 
segg, n. A dialectal variant of seg 1 . 
seggan (seg'an), . [A dim. form of so/ 1 .] 
Sedge. [Scotch.] 
seggar (seg'ar), n. Same as saggar. 
seggent, segge 2 t, '' Obsolete forms of say 1 . 
seggont, . [Cf. seg 3 .} A man; a laboring man. 
Poore seffgons halfe starued worke faintly and dull. 
Tusser, Husbandry, p. 174. (Davies.) 
seggrom, seggrum (seg'rum), n. The ragwort, 
Seat-do Jaeobxa. Prior, Pop. Names of Brit. 
Plants. 
seghol (se-gol'), M. [< Heb. seghol (so called 
from its appearance), lit. ' a bunch of grapes.'] 
In Heb. gram.: (a) A vowel-point consisting 
of three dots placed under a consonant, thus 
TT, and indicating the sound of an open e, usu- 
ally short, as in English met, but also long, 
nearly as in there, (b) The sound represented 
by this vowel-point. 
segholate (seg'o-lat), . [NL. segolatum; < se- 
ghol + -ate 1 .} In Heb. gram., a noun or noun- 
form (adjective, infinitive, etc.) of a type usu- 
ally represented by dissyllables pointed with a 
long tone-vowel in the first and a short seghol 
(S) in the second syllable. Segholates have a mono- 
syllabic primitive form with one short vowel (a, 1, u), be- 
longing usually to the first radical. By giving the second 
radical a short seghol as helping vowel, the form becomes 
dissyllabic. The first syllable then becomes open, and, tak- 
ing the tone, appeal's as long e (seghol or tsere) or long o. 
segni. An abbreviation for segment, used in bo- 
tanical writings. Gray. 
segment (seg'meut), . [= F. segment = Sp. 
Pg. segmento = It. segmento, semmento, < L. 
segmentum, a piece cut off, a strip, segment 
of the earth, a strip of tinsel, ML. in geom. 
(tr. Gr. TU.IJIUI) a segment, < secure, cut: see 
secant, and cf. section, sector.} 1. A part cut 
off or marked as separate from others ; one of 
the parts into which a body naturally divides 
itself; a section: as, the segments of a calyx: 
the segments of an orange; the segments of a 
leaf. Specifically, in zoul. and anat. : (a) One of the rings, 
somites, or metameres of which the body of an animal 
is theoretically or actually composed, as an arthromere of 
a worm or crustacean, or a diarthromere of a vertebrate. 
See cuts under Callimorpha, cephalic, Podnphlhalmia, 
preestomium, and prometheus. (b) One of the three pri- 
mary divisions of either fore or hind limb of a vertebrate, 
corresponding to the parts known in man as the upper 
arm, forearm, and hand, orthe thigh, 
leg. and foot. See cut under piii- 
toi. (c) One of the three rings or 
divisions of the skull ; a cranial seg- ,\ / \ B 
ment, which has been by some con- 
sidered a modified vertebra. 
2. In geom.. a part cut off from 
any figure by a line or plane. 
A segment of a circle is a part of the 
area contained within an aic and its ,, ,,,- , 
chord, as ACB. The chord is some- ACS 
5468 
times called the bate of the sefnnent. An angle in a seg- 
ment is the angle contained by two stmi^ht lint's drawn 
from any point in its arc to the extremities of its chord or 
base. 
3. In her., a bearing representing one part only 
of a rounded object, as a coronet or wreath: 
usually a piece less than half of the circle. 
Abdominal, basilar, maxillary, postoral, etc., seg- 
ments. See the adjectives. Calcifying or calcine 
segment. See calcify. Segment of a line, the part 
included between two points. Segment of a sphere, 
any part of it cut off by a plane not passing through the 
center. similar segments of circles, see similar, 3. 
segment (seg'ment), f. [< 8c</iiii'iit, n.} I. 
intrans. To divide or become divided or split 
up into segments, (o) In embryol., to undergo seg. 
mentation, as an ovum or vitellus. See segmentation, (b) 
In physiol., to reproduce by semiflssion or budding. 
Before this occurs, however, the vegetal unit, if it does 
not divide, may segment or bud ; the bud grows into a unit 
similar to its parent, aud this in its turn may also segment 
or bud. Haitian, The Brain as an Organ of Mind, i. 
II. trans. To separate or divide into seg- 
ments : as, a segmented cell, 
segmenta. . Plural of segmentum. 
segmental (seg'men-tal),rt. [< segment + -al.] 
1. Having the form of the segment of a cir- 
cle; being a segment: as, a seginental arch. 
2. Of or pertaining to segments or segmenta- 
tion: as, a segmen tal formula ; segmen tal parts; 
segmental organs. 3. Specifically, in enibryol., 
noting the primitive and rudimentary renal or- 
gans which occur in all vertebrates and some 
invertebrates, consisting in the former of 
branched tubules opening at one end into the 
somatic cavity and at the other by one or more 
main ducts into the cloaca orhindgut. Theseg- 
mental organs of a vertebrate are divisible into three 
parts, anterior, middle, and posterior. The foremost is 
the head-kidney or pronephron, whose duct becomes a 
Mullerian duct The next is the Wolflian body proper, or 
mesonephron, whose duct is the Wolfttan duct. The last 
or hindmost is the rudiment of the permanent kidney, 
whose duct is the ureter ; this is the metanephmn. The 
epithet segmental in this sense was originally used to 
note the kind of renal or excretory organs which annelids, 
as worms and leeches, possess, in more or fewerof the seg- 
ments of the body, whence the name ; it was subsequently 
extended to the above-described embryonic renal organs 
of vertebrates which are replaced by permanent kidneys 
these segmental organs being thus loosely synonymous 
with primitive kidney, Wolffian body, and protonephron. 
See cut under leech. 
segmentally (seg'men-tal-i), adv. In a seg- 
mental manner; in segments: as, the spinal 
nerves are arranged segmentally. 
These organs, being . . . segmentally arranged, are 
termed segmental organs or nephridia, 
Huxley and Martin, Elementary Biology, p. 244. 
segmentary (seg'men-ta-ri), a. [< segment + 
-argi.] Segmental ; pertaining to or indicating 
segments : especially noting in entomology col- 
ored bands, rings, or other marks on the abdo- 
men, corresponding to successive segments, as 
in many Lepidoptera Segmentary geometry. See 
geometry. 
segmenta te (seg'men-tat), a. [< L. segnieiita- 
tus, ornamented with strips of tinsel, lit. hav- 
ing segments, < segmentum, a segment : see seg- 
ment.'} Having segments ; segmented. Encyc. 
Brit., II. 292. 
segmentation (seg-men-ta'shon), n. [< seg- 
ment + -ation.~\ The act of cutting into seg- 
ments; a division into segments; the condi- 
tion of being divided into segments ; the man- 
ner in which a segmented part is divided. 
Segmentation cavity, in embryol., the central space in- 
closed by the blastomeres of the embryo, before the for- 
mation of a gastrula by invaglnation ; the hollow of a blas- 
tosphere ; a blastocoele. Segmentation nucleus, the 
nucleus of an impregnated ovum or germ-cell, resulting 
from fusion of a male and a female pronucleus, and ca- 
pable of undergoing segmentation. Segmentation of 
the vitellus, in embryol., yolk-cleavage ; morulation ; the 
first process of germination of the ovum of any raetazoic 
animal, by which the original single cell of which the 
ovum primitively consists becomes converted, wholly or 
in part, into a mass of similar cells, constituting a morula 
or mulberry-mass. The cells thus formed are specified as 
cleavafie-cells, blttgtomeres, or ttefrmentella. Segmentation 
goes on in different cases with some variations, chiefly 
due to the presence of food-yolk and the position of this 
yolk relatively to the formative yolk (see centrolecithal, ecto- 
lecithal). Total segmentation is necessarily restricted to 
holoblastic ova ; it is distinguished from the partial seg- 
mentation of meroblastic ova (see holoblastic, meroblastic}, 
the terms meaning respectively that all, or that only some, 
of the yolk segments. Total segmentation is equal or regu- 
lar when the whole germ-cell divides into two similar 
cleavage-cells, aud these into four, and so on, the resulting 
gastrula being the archigastrula. Total segmentation is 
unequal or irregular when the cleavage-cells are unlike 
one another; it results in the amphigastrula. The partial 
segmentation of meroblastic eggs is always unequal, and 
either discoidal with formation of a discogastrula, or su- 
perficial and forming a perigastrula. Total equal segmen- 
tation is also styled primitive, primordial, and palinge- 
netic, the modifications introduced in unequal and partial 
segmentation being described as kenogenetic. Other terms, 
descriptive rather than definitive, are used by different 
Segment gear and Rack. 
" rack * Kymem^eM ; <, lever 
, . connected with p and pivoted to frame 
Ordinary at <t; i, connecting -roil shown as Join- 
' ti " <s/ ' "" f " w " ' 
segreant 
writers ; the foregoing is nearly Haeckel's nomenclature. 
Seeeral, ovum, vitellus, and cuts under gastrula and gas- 
trulatiun. Segmentation rhythm, the rate of produc- 
tion of successive cleavage-cells, or their numerical ratio 
of increase, whether 2, 4, y, 16, 32, etc., or any other mode 
of multiplication. Segmentation sphere, a ball of 
cleavage-cells ; a blastosphere ; a morula. 
segmented (seg'men-ted), a. [< segment + 
-i<l-.] Divided into segments, segmenta, or 
segmentella; characterized by or exhibiting 
segmentation ; somitic ; metameric : thus, the 
body of a vertebrate is segmented according to 
the number of vertebra, whether any actual 
division of parts may be evident or not. 
segmentellum (seg-men-tel'iim), . ; pi. seg- 
mentella (-a). [NL., dim. of L. segmentum, a 
cutting: see segment.] One of the cleavage- 
cells which result from segmentation of the vi- 
tellus of a fecundated ovum : same as blasto- 
mere. See cut un- 
der gastrulation. 
segment-gear (seg'- 
ment-ger), . A 
gear extending over 
an arc only of a cir- 
cle, and intended to 
provide a reciprocat- 
ing motion. 
segment-rack (seg'- 
ment-rak), n. A COg- 
ged surface differing 
T , . 
trom an 
rack in that it is 
curved, and works 
by oscillating on a center instead of recipro- 
cating in slides or guides. E. H. Knight. 
segment-saw (seg'ment-sa), w. 1. A circular 
saw used for cutting veneers from squared logs, 
consisting of a conical disk having the apex cen- 
tral with the arbor, and very thin firmly toothed 
segmental saw-plates fastened to the outer mar- 
gin of the disk. Such a saw having a diameter of 60 
inched would be about 16 inches thick at the arbor the 
object being to bend the veneers out like a thin shaving 
as they are sawed from the log. 
2. In surg., same as Bey's saw. See saw 1 . 
segment-shell (seg'ment-shel), w. A modern 
projectile for artillery, usually in the form of 
a conical or oblong shell for rifled guns, in 
which an inner cylinder of thin iron contains 
the bursting-charge, and this is contained in 
an outer shell composed of segmental pieces 
which are either thrown in all directions on the 
bursting of the shell, orthrown forward, accord- 
ing to the arrangement made: the whole is 
cased in lead for transportation and loading. 
segmentum (seg-men'tum), M. ; pi. segmenta 
(-ta). [NL. use of L. segmentum, segment : see 
segment.} In anat. and zool., a segment, as an 
arthromere, a metamere, a diarthromere, an 
antimere, an actinomere, a somite, etc. 
segment-valve (seg'meut-valv), n. See valve. 
segment-wheel (seg'ment-hwel), n. A wheel 
of which only a part of the pe- 
riphery is utilized to perform 
any function. Applications of it 
appear in the segment-gear and 
segment-rack. 
segnitudet (seg'ni-tud), . [< 
JkfL. xegniltido, for L. segnitia, 
segnities, slowness, tardiness, < 
segnis, slow, slack, sluggish, tardy: usually re- 
ferred to sequi, follow : see sequent.} Sluggish- 
ness; dullness; inactivity. Imp. Diet. 
segnityt (seg'ni-ti), . [< L. as if "segnita(t-)s, 
for segnitia, segnities, slowness: see segnitude.} 
Same as segnitude. Imp. Diet. 
segno (sa'nyo)^ n. [It., a sign, < L. signiim. 
mark, token, sign: see sign.} In musical nota- 
tion, a sign or mark used to indicate the begin- 
ning or end of repetitions. Abbreviated $. See 
al segno, dal segno. 
SCgO (se'go), n. [Ute Indian.] A showy flow- 
ered plant, Calochortus Xuttallii, widely dis- 
tributed in the western United States. 
segoon, . Same as seconde. 
segra-seed (se'grii-sed), . The seed of Feuil- 
lea eordifolia, or the plant itself. See Feuillea. 
segreant (seg're-ant), a. [Written sergreant in 
" Guillem's Heraldry " (ed. 1638), and there ex- 
plained as an epithet of the griffin, meaning 
' of a twofold nature,' because the griffin pas- 
sant combined parts of the eagle and the lion ; 
perhaps an error for a form intended to repre- 
sent L. mtrgen(t-)s (> OF. sotirdant), rising: see 
surgent.] In her., rising on the hind legs, usu- 
ally with the wings raised or indorsed : an epi- 
thet noting the griffin: equivalent to rampant 
and sal ifii t. 
