Exocephala 
2071 
Exocephala (ek -so-soC'it-lii), . />/. [NL., neut. have the anus eccentric, as the shield-urchins 
El. of 'OKMpkatlH, < < <r. i'iu, wit liout, + Ktp&.ii, anil heart-urehins. 
cad.] A group of mollusks, comprising the Exod. An abbreviation of Exodus. 
cephalophorous forms: contrasted with Etido- exode 1 (ek'sod), n. (_= F. exode = Sp. Pg. ex- 
ceiiliald. odo = It. esodo, < LL. exodus, a going out, the 
Exochnata (ek-sok-nfi'tii), . jil. [NL. (Fabri- 
i-iiis, 1793), a perverted "fnrin intended for Ex- 
ogniitliii. neut. pi. of "exniiniilliiix, < <}r. <';u, out- 
side, 4- ; nii/or, jaw.] In Fabricius's elMOifloa- 
tion of insects with biting mouth-parts, a divi- 
. , 
book so named: see exodus.] 
[Hare.] 
Same as exodus. 
exomis 
With respect to exagam;/ itself, Mr. MacLennan iKlleref 
that it arose from a scarcity of women, owing to female 
infanticide, aided perhaps by other causes. 
ir. "I Animals and Plants, p. 103. 
(ek'so-gas-tri'tis), n. [NL., < Or. 
' , belly, + -itis.] Same as 
characterized by having many maxillie 
outside thelabium (whence the name), and con- exode- (ek'sod), n. 
Their [the Israelites') numlH-r inert-aged In every gencr- 
atlon to vatly, that they conbl I. me.'. nt that time of the 
exode, six hundred thousand huhtiiiK men into the field. 
Bolingbroke, Minutes of Essays. 
[< F. 1-xinle, < L. exodinm, 
a comic afterpiece, a conclusion, end, < Gr. 
ttyiiov, the finale of a tragedy, a tragical con- 
clusion, a catastrophe, neut. of il-Mtof , of or be- 
longing to an exit (-uxJM v6/jot, the finale of a 
play), < JfcxJor, a going out, exit, close : see e x- 
' the macrurous decapod crustaceans, 
Exochorda (ek-so-kor'dil), H. [XL. (so called 
because the thread-like placeutasare left stand- 
ing after the fall of the carpels), < Gr. f{u, out- 
side, 4- xt >s 'li a string: see chord.] A rosa- c ,, . , 
ceous genus of northern China, closely related oitim.] 1. In the Gr. drama, the concluding 
to Spiraea. The only species, E. grand/flora. In a bi'iiu- 
tiful shrub with axillary laremes of large white flowers, 
ami is fnuml in cultivation. 
exocoelar (ek-so-sc'liir), . [< Gr. l$u, outside, 
4- jcotXo;, hollow, Kot'/.ia, the hollow of the body, 
the belly, 4- -ar.] In zoiit., situatetl on the outer 
wall, or parietal surface, or somatic side, of 
the coeloma or body-cavity; somatopleural : said 
chiefly of bodies derived from a four-layered exodic (ek-sod'ik), a. [=F.exodique; as exode 1 
germ, and hence with reference to the somato- -f. _,-,..] j. Pertaining to an exodus, or a going 
pleuru or parietal division of the mesoderm. ou t. Specifically 2f. Inphysiol., same as ef- 
KniMi the innermost layer of cells of this secondary ferent. 
germ-layer develops the exocaelar that Is, the outer, or exodist (ek'so-dist), . [< exode 1 4- -ist.] One 
part of a play, or the part which comprehends 
all that is said after the last choral ode. 2. 
In the Horn, drama, a farce or satire, played as 
an afterpiece or as an interlude. 
The Romans had three plays acted one after another, 
on tlif same subject ; the tlrst a real tragedy, the second 
the Atellane, the third a satire or exnde, a kind of farce 
uf one act. JlMMMiM. 
I" ', 
exogen(ek'so-jen), n. [<NL. exogenus, < Gr.ii-u, 
outside, 4- -ftvfa, producing: see -gen, -aenous.] 
In 'iit., a 
* plant in which 
the growth of 
the stem is 
in successive 
concentric 
layers. The 
exogens, other- 
wise called dico- 
r,,i ;,.,, tm . ,, 
cotyledon), form 
the larger of the 
two classes into 
which plueuoga- 
nioiis plants are 
divided. They 
are usually con- 
sidered as In- 
cluding two sub- 
classes, the an. 
giosperms and 
the gymno- 
-i'< i ms, though 
the latter, which 
have essentially the same structure and mode of growth, 
but Miller in having naked ovules, are by some late author- 
ities separated as a distinct class. Sec endogen. 
Exogen. 
1. Section of a branch of three years' growth : 
a, mi 'lull.! or pith ; * t>, medullary sheath ; ft, 
medullary ravs ;<<"<% circles of annual growth ; 
i*. hark. 2. Netted veined leaf (oak). 3. Di- 
cotyledonous seed : a, cotyledon. 4. Germina- 
tion of dicotyledonous seed : a a, seed-leaves 
or cotyledons ; o, plumula. 5. Exogenous flower 
(crowfoot). 
who makes an exodus; an emigrant; one of a Ejogenae (ek-soj'e-ne), n. pi. [NL".. fern. pi. 
band of emigrants. [Rare.] (sc. ptanta:) ot cxogeims: see cxogen.] In but., 
As Want was the prime foe these hardy exotlatt had to the exogens. 
fortify themselves against, so it is little wonder if that exogenetic (ek-so-ie-net'ik), . Having an ori- 
traditlonal feud Is to^tlgutgoftctl* stock^ ^ gin from extenial Causes : as, an fxogenetic dis- 
parietal caaloiu-eptthelium. 
UarcM, Evol. of Man (trans.), I. 271. 
exoccelarium, (ek"so-8e-la'ri-um), . [NL. : see 
exoeatlar.] In toSl., the exocoelar layer of cells 
forming the epithelium of the parietal, somato- 
pleural, or outer wall of the body-cavity; the *~, ".." .^.., ..~. - ftge i> un(l u s on. 
parietal epithelium of the coaloma; exocoelar exodus (ek'so-dus), n. [< LL. Exodus, the book exogenite (ek-soj'e-nit), n. [< exogeu + -ite.] 
OOBUrtum. Hacckel. 8 o named, < Gr. JftxJof, a going out, a marching A generic name proposed, but not generally 
out, a way out, issue, end, close ; the name in adopted, for fossil exogenous wood of unknown 
the Septuagint of the second book of the Old affinities. 
Testament; < ff, out, + orfof, a way.] 1. A go- exo genous (ek-soj'e-nns), a. [< NL. txogenux: 
ing out; departure from a place; especially, Re eexogen.'} 1. Growing by additions on the out- 
the migration of large bodies of people or am- 8 jd e ; specifically, in fcot., belonging to or char- 
mals from one country or region to another; 
specifically, in hist., the departure of the Israel- 
ites from Egypt under the leadership of Moses. 
Exocoetidae (ck-so-se'ti-de), !>' [NL., < EJCO- 
coetus + -idee.'} A family of fishes, typified by 
the genus Exoeatus. They have an elongate form, the 
head being of moderate size, and the jaws not extending 
Into long dentigerous weapons, though sometimes elon- 
gated ; feeble teeth ; posterior and opposite dorsal and 
anal flits, the caudal flu with the lower lobe more or 
less enlarged, generally enlarged ventrals, and well-de- 
veloped prctni ,tls. The chief distinction from the Btlo- 
nida; or garfishes lies in the skull, especially thelower jaw. 
and in the vertehrre. The family embraces the soft-rayed 
flying-flshes, and also some others agreeing in structure, 
and has been divided into three subfamilies, Kxue-oeliiue, 
Hemii-hn>nphin<e, and SaMMtemM0faA Also Exoceidat. 
Exoccetinae (ek'so-se-ti'ne), n. j>l. [NL., < Exo- 
aetus + -ina-.] The typical subfamily of Exo- 
i'n lidce. 
exqccetine (ck-so-se'tin),n. and n. I. a. Per- 
taining to or having the characters of the Exo- 
firthue. 
II. . A fish of the subfamily Exocoetina. 
exoccetoid (t-k-so-se'toid), a. and n. I. a. Per- 
taining to or having the characters of the Exo- 
Exodtu out ol 
Theodore 
rt is entrance to the promised land. 
Barker, Int. to Serm. on Theism, etc. 
Exodu* of birds from sundry places afflicted with cholera 
has been recorded. 
T. GUI, Smithsonian Report, 1883, p. 730. 
2. [cap.] The second book of the Old Testa- 
ment, designated by the Jews by its two initial 
words, or, more commonly, by the second of 
them, Shcmotli. The Greek name Extxlug was attached 
to it in the Septuagint version. The book consists of two 
distinct portions. The first (ch. i.-xix.) gives a detailed 
account of the circumstances under which the departure 
of the Israelites was accomplished. The second (ch. \\. 
xl.) describes the giving of the law, and the institutions 
which completed the organization of the people. Abbre- 
viated A'r. . Kxod. 
II. n. A fish of the family Exoccetida. 
exoccetous (ek-so-se'tus), a. [< L. exocoetus: exodyt (ek'so-di), n. 
see JbootVbu.] Same as exocaitoiil. dus.] An exodus. 
Exocoetus (ek-so-se'tus), >i. TNL., < L. exocce- 
^ x," <-' ' f \. In all probability their years continued to be three hnn- 
tus, < Gr. efaicotTof, a fish supposed to come upon llre( , all ,{ 8l!tty . nv / day8 , e ver since the time of the Jewish 
the beach to sleep (also called aduwf ), < tfu. aady, at least. Sir it. Hale, Orig. of Mankind, 
out, 4- (to/roc, a bed, sleep, < Kfio0ai. lie, sleep.] r ot a n 
The typical genus of Exocastidai and Exoccetina: e ^, ? "J 1 ; *? 
Eight species have been recorded as visitors to the United 
States coast, among which are E. volitaiis, E. exilieti*, and 
. fi'iiiliii'ti, which are found along the eastern coast, and 
E. cali/ornicm (one of the largest of the genus), which is 
common along the Lower California!! 
acteristic of the class of exogens. 2. Produced 
on the outside, as the spores of hyphomycetous 
and many other fungi ; growing out from some 
part: specifically applied in anatomy to those 
processes of a vertebra which have no inde- 
pendent ossific centers of their own, but are 
mere outgrowths. 
The various processes of the vertebra; have been divided 
into those that are autogenous, or formed from separate 
ossiflc centers, and ext*rftutwt, or outgrowths from . . . 
primary vertebral constituent*. 
W. //. F/owrr, Osteology, p. 18. 
The origin of lateral members is either exoyenont or en- 
dogenous. It is the former when they are formed by lateral 
outgrowth of a superficial cell or of a massof cells Includ- 
ing the outer layers of tissue, as in the case of all leaves 
and hairs and most normal leaf-forming shooU. 
Sacht, Botany (trans.), p. 140. 
Exoglossinae (ek'so-glo-si'ne), n. pi. [NL., < 
' 
u. : ex, from ; officio, 
coast. See cut under -. 
exocorium (ek-aS-kd'n-nm), n. ; 
pi. exocoria (-ii). '[NL.,< Gr. lu, 
outside, + NL. rorium, q. v.] 
A narrow external marginal 
part of the homelytron of cer- 
tain liemipterous insects. 
exoculation (ek-sok-u-la'shon), 
n. [< L. csociiliirc, pp. exnciilii- 
tus, put out the eyes, < ex, out, 
-I- oculus, the eye.] The act 
of putting out the eyes; exce- 
cation. [Kare.] 
The history "( Kiiropc during the 
dark H.^fsahoiiuils with fxanipU-sof ex- 
teuton " >"crA- it, Roderick. ii., note. 
exocyclic (ek-so-sik'lik), a. 
[Irreg. accom. of LL. exo- Exoglossum + -ince."] A subfamily of cyprinoid 
fishes remarkable for the development of the 
lower jaw, the dentary bones being laterally 
expanded and mesially united for their whole 
length. It Is represented by a single genuB and species, 
Ej-t>'ttKxiiiii maxillingtia, confined to the United States, 
. ,,.-, and popularly known as cut-lifg and rtvne-toter. 
abl. of officium, office: see office.] By virtue of exoglossine (ek-so-glos'in), a. and n. I. a. 
office (and without other especial authority) : Pertaining to or having the characters of the 
Exoglossina. 1 . 
II. n. A fish of the subfamily Exoglossinte. 
Exoglossum (ek-so-glos'um), n. [NL.,< Gr. ffu, 
outside, 4- y'f.ijoca, tongue.] An American ge- 
nus of cyprinoid fishes having the mandibmar 
rami of the lower jaw united in front : so called 
because this formation resembles a projecting 
[Improp. for tongue. It typifies the subfamily Exoglossinw. 
Rafinesque. 
exoletet (ek'so-let), a. [< L. exoletvs, pp. of fi- 
oleseere, grow out, mature, grow out of use, be- 
come obsolete, decay, < ex, out, 4- olescere (only 
in comp.), grow; cf. obsolete.'] Obsolete; worn; 
faded; flat; insipid. 
as, a justice of the peace may ex ojtirio take 
sureties of the peace: also used adjectively: 
as, an ex officio member of a body, 
exogamic (ek-so-gam'ik), a. [< exogamy + -tc.] 
Same as cxogamous. 
The first stage Is the tribe, based on consanguinity with 
exogamic marriage. Science, III. 54. 
Exocorium. 
Dorsal view of watei 
exogamitic (ek'so-ga-mit'ik), a. 
i .mi in ni it>. J Same as exogamoiis. 
exogamous (ek-sog'a-mus), a. [< exogamy + 
-one] Pertaining to or of the nature of ex- 
ogamy ; characterized by exogamy ; practising 
exogamy. 
Thus there are in China large bodies of related clans- 
men, each generally bearing the same clan name. Tiny 
art- .i" '-''"'"- no man Mill marry a woman having the 
same clan name as himself. 
M'ii,i,: Early Law and Custom, p. 223. exom i s (ek-so'mis), B. 
j. scutel ; f, cUvus; 
; mm ; ex, exo- 
cormm ; M. uncus.m, 
membrane. 
Peace und (riemlaliip were unknown between separate 
uToiij.s r tribes in early tiint-s, except when they were 
fntvt-ii to unite against coinnion eiit*ink*s. . . . While this 
state of i-ninity la-trd. - r<itiiti<>nx tiilies never could get 
\\ ivt s rxrcjit by theft or fnn-r. 
MfLfiiH tn Prim. Marriage, iii. 
There is a Greeke inscription which I could not under- 
stand, by reason of the antiquity of those rxoltle letter*. 
Con/at, Crudities, I. !3. 
[Gr. i?a/iic, a vest with- 
Pertaining to the Ejcocyclica; 
having an eccentric anus, as a 
clypeustroid or spatangoul sea- 
urcaiu. 
Exocycliea (ek-so-sik'li-kij), u. />/. fNL., <Gr. exogamy (rk-sog'a-nii),n. [<Gr. ^fw. outsi(U-.+ 
uw. outside, -f- M'x>/jf<$f, circular, < KCK^OC, a cir- -yatiia~<^ jni/of, marriage.] The custom among 
fie.] Au order of echinoderms, containing the certain tribes which prohibits a man from 
irregular or pctalostioluuis sen-urchins, which marrying a woman of his own tribe. 
out sleeves, leaving one shoulder bare, < it;, out, 
+ <joc, shoulder: see htimerus.] In Gr. antn/., 
originally, a form of the short Dorian tunic 
or chiton, which was fastened over the left 
shoulder only, leas-ing the right arm entirely 
free. Later, tunic* \vrtv sui]etinu-s woven with a short 
sleeve for the left arm. nnd none for the right, the right 
shoulder remaining uncovered. This formed a usual dress 
for slaves and workmen, as the limbs of the wearer were 
