chordometer 981 
sure.] An instrument for measuring Mir thick- choreoid (ko-re'oid), . [< chorea + -aid.] Re- 
nrss of strinirs. sembling chorea or what occurs in ehorea; 
Chordonia (kor-do'ni-ii), ". 1>I. [XL., pi. of chorciform. 
.huriliiiiimit, q. v.] A hrpotfietical i^mp of choreomania(ko-re-o-ma'm-ii), . [<L.a*ra 
worni-liko animals, of which the chordoninm is + miini/i, madness.] Samr :is i-liiii-nminiiii. 
the type or common parent-form, and of which ehorepiscopal (kd-rf-pdB'k$-pl), ". [< <//<,;<- 
the tunicate A)>iH'>i<li<-iilnriii or any caudate pitcopw + -oi.] Pertaining to a chorepiscu|,us. 
ascidian larva is an extant representative, dis- They were allow ed the name, ami honour, ami 
chordonium (kor-do'ni-um), .; pi. churdoitiit 
(-'A). [ML., < Gr. t'V"''/) tng, chord, cord : see 
cli'ord, rmv/i.] A name given bv Haeckel to a 
= Pg. chorebixpo = It. 
< Gr. xaptirlantnrof, < ;rupa, place, + fTi<r/voirof, 
bishop: see tiisho/i.] One of a class of clergy, 
Oftord, oora 1 .] A name given by HaecKel to a i owmw.i 
hypothetical worm which he supposed to have in rank between bishops proper and presbyters, 
been among t he common parent-forms of aseid- introduced!)! the latter part of the third century 
ians and vertebrates. 
chordotonal (kor-do-to'nal), a. [< Gr. xP^'h 
chord, + TUVOC, tone,' + -a/.] Kesponsive to the 
vibrations or tones of sound: applied to cer- 
tain organs or parts of insects and spiders. 
These (sense-organs in the legs of spiders] are thought 
to ! analogous to the cliurilutiiiuil organs of insects. 
T. <lill. 
to aid in the episcopal supervision of the coun- 
try districts of enlarged dioceses. (toman t 'atholie 
authorities hold that they wen- not hi, hops, but priests 
intrusted with special power; while others re^uni them 
as truly bishops, though of inferior dignity and limited 
authority. It is probable that both these views are histor- 
ically correct, but apply to different period*. 
choreus (ko-re'us), .; pi. chorei (-i). [L., < Gr. 
Xopelof, pertaining to a dance or chorus, a me- 
chore 1 (chor), H. [Also written choar and dial, ter so called, < jopof, a dance: see chorus.] In 
i-lnioi; formerly chcwrc, a var. of chare, char : see pros., same as trochee. 
char 1 , chare*.] A char, chare, or small job; choria, . Plural of cliorion. 
a task; especially, a piece of minor domestic choriamb (ko'ri-amb), n. [Also, as L., chori- 
work, as about a house or barn, of regular or aitibitu, < Gr. x n P< a PPS> < W*>fi choreus, -t 
frequent recurrence: generally in the plural. la/i,iof, iambus.] In anc. pros., a foot of four 
[Now U. S.] syllables, the first and fourth of which are long, 
the second and third short, the ictus or metri- 
cal stress resting either on the first or on the 
last syllable (-* ** ** or ^ - -*). The genuine 
choriamb has a magnitude of six times or morn (is hexa- 
semic) ; and as four of these constitute the thesis and two 
the arsis, or vice versa, it belongs to the diplasic cliss of 
feet. Genuine choriambs are rare. Apparent choriambs 
are catalectic dactylic dipodies (* w w | ^), either of gen- 
uine dactyls, as at the end of a pentameter, or of cyclic 
dactyls, as in Asclepiadic and other logarcdic verses. Ana 
Here's two cheirre* chewr'd : when Wisdom is employ'd, 
'Tis ever thus. Beau, ami Ft. , Love's Cure, iii. 2. 
Meanwhile we did our nightly chores, 
Brought in the wood from out of doors, 
Littered the stalls, and from the mows 
Raked down the herd's-grass for the cows. 
Whittier, Snow-Bound. 
Now that is the wisdom of a man, in every instance of 
his labor, to hitch his wagon to a star, and see his chare 
done by the gods themselves. Einermn, Civilization. 
The Yankee boy of those times was wont to have a reg- 
ular set of chorea to do, such as cutting and bringing in 
wood, making flres, and the like. 
chore 1 (chor), v. Same as char*, 5. 
chore'' 3 , . [See chare 1 *.] Same as chare' 2 . 
chore s t (kor), . [< L. chorus : see choir.] A 
chorus ; a choir. S. Jonson. 
chorea (ko-re'a), H. [= F. choree = Sp. corea 
= Pg. chorea = It. corea, < L. chorea, chorea, < 
Gr. xP eia > a dance, prop. fern, of xP cl 
ctyls, as i 
pestle lines analyzed as dactylic series with anacrusis show 
similar forms. The choriamb takes its name from its ap- 
rent composition from a choree (trochee) and an iambus. 
Choristopoda 
It (the "ditfiiKcd placenta ') is probably a primitive 
condition, from which ioo.| of the other.- are derived, al- 
thollgh Its existence Itill-t pi v-il|,J,o.i the absence of tile 
umbilical ve-icle as a constituent of the <-l<u>-i"ii<<- wall. 
ir. II it., XV. 370. 
chorioretinitis (ko'ri-o-ret-i-m'tis), M. [< Gr. 
Xi'i/iim, membrane (choroid), + L. rrtiiin, retina, 
+ -itis.] In pntlinl., inflammation of the cho- 
roid coat of the eye and the retina. Also trailed 
rliiirniilnri -tin Hi.-- ami rtttfUMjhoroicUtii. 
choripetalous ( ko-ri-pet'a-lus), n. [Irreg. < Gr. 
Xup'f, asunder, + -irn'/ui; a leaf (petal).] In 
bot., having the petals unconnected : equivalent 
til IIII/I//H ttUOlU, 
choriphyllous (ko-ri-iil'us), a. [Irreg. < Gr. 
xupif, asunder, + <j>i'/./ov = L. folium, leaf.] In 
bot., composed of separate leaves (petals and 
sepals): applied to a perianth. 
Chorisepalous (ko-ri-sep ' a-lus), a. [Irreg. < 
Gr. x u l"t, asunder, + NL. Be/ialum, sepal.] In 
lini.. having the sepals distinct. 
chorisis (ko'ri-sis), . [NL., < Gr. x&P l <"f, * 
separation, < x u P'& lv i separate, sever, < x u P't> 
apart, asunder.] In bot., the multiplication, 
by congenital division, of an organ which is 
ordinarily entire. It is usually restricted to the sta- 
mens and carpels of the flower, and may be either col- 
lateral, when the parts are side by side, as in the stamens 
of Dicentra, or, more rarely, transverse. Also called cho- 
rization. 
chorisma (ko-riz'mii), . ; pi. chorixmiitti (-ma- 
tii). [NL. <; Gr. x"P' a l^ a , a separated space, < 
Xupifriv, separate, part, < x u l>'fi apart.] In 
.iiiii. -,n\>\ mini., a separating; a separation; a 
distinction of parts or things. 
chorist (ko'rist), n. [= D. korist = G. chorist, 
korist = Dan. korist, < F. choriste = Sp. Pg. 
It. corista, < ML. chorista (also chorialis), < L. 
chorus, choir: see chorus, andcf. chorister.] A 
singer in a choir. [Rare.] 
Behold the great choritt of the angelical quire. 
Parthetuia Sacra (1833), p. 150. 
choriambic (ko-ri-am'bik), a. and n. [< L. 
choriambicus, ( Gr. ^op/a///3iK<Jf, ^ ^op/a^^oc, cho- 
riamb.] I. a. Pertaining to, constituting, or 
consisting of choriambs : as, a choriambic foot, 
verse, or movement. 
II. n. A foot constituting a choriamb, or a 
longing to a dance or chorus: see choreus. j . /^j% 
A nervous disease, usually occurring before - 
verse consisting of choriambs. 
of -j .?" choriambus (ko-ri-am'bus), . ; pi. choriambi 
^J, (-bi). Same as choriamb. 
laiunu (ko'rik), a. [= F. chorique = It. corico, 
puberty, marked by irregular and involuntary < L c1 l oricus Gr . ^ oplK ^, pertaining to a cho- 
niotions of one or more limbs and of the face 
and trunk, which, however, cease in sleep. Its 
morbid anatomy is undetermined. Also called 
St. Fitus's dance. 2. [cap.] [NL.] Incntom., a 
genus of coleopterous insects. Haldeman, 1847. 
choreal (ko-re'al), a. [< chorea + -al.] I. Per- 
taining to or of the nature of chorea; charac- 
teristic of chorea: as, choreal movements. 2. 
Affected with chorea. 
rus, < ^opof, chorus: see chorus.] Of or per- 
taining to a chorus ; specifically, fitted for the 
use of the chorus in the ancient Greek drama: 
as, choric meters, poems, or compositions (that 
is, the more elaborate as opposed to the sim- 
pler meters, etc.). See chorus, 1 (6). 
The choric spirit is here. . . . The choric responses of 
the last dialogue form a resonant climax to the whole. 
Stedman, Viet. Poets, p. 388. 
Many students are interested in being told that a case is chorioblastosis (k6"ri-o-bla8-t6'8is), n. [< Gr. 
one of true epilepsy, . . . who have never tried to form a vopwv, membrane (corium), + /<Xa<mif, germ, + 
clear conception of the sort of movements they can see in --; T T., nn tt. n 1 a nnmn o-ivpn hv Aussnitz to 
a choreal child. MUKcan, Morbid Germs, p. 24. -** J pal toi., a 
a deviation from normal growth in the corium 
Choree (ko re),. [=F c;ior<fe = Sp.com> = Pg. Qr true gkin for examp i e a granuloma, a 
choreu = It. coreo, <T L. choreus : see choreus.] fn fibroma or case o atr0 pfi y . 
pros., same as trochee. The word choree (choreus, Cn0 riocapillaris (ko'ri-o-kap-i-la'ris), a. used 
xop.0 was used by the earlier classical writers on met- c "" u 7y'r 111 ? 1 ( A \^ , '^^ 
yop< 
rics as identical with troche.?, to designate both the foot 
now called trochee ( w) and its resolved form the tribrach 
(^ w w), but more frequently the latter. Cicero and Quin- 
tilian call the trochee ( ^) chorew*, and the tribrach 
(w~w) trochceus. Later writers use the names trochceus 
and triorachj/s exclusively for the feet still known by those 
names. Choree or choreux in modern usage is simply a 
rare name for trochee ( -~). Also called choreus. 
choregi, . Plural of chorequs. 
choregraphic, choregraphical, a. See choro- 
qrafihii'-. 
choregraphy, . See chorograpliy' 2 . 
choregus, n. See choragus. [Bare.] 
He [Socrates] is the rhoregus of Greek free-thought. 
J. Ouvn, Evenings with Skeptics, I. 181. 
choregy (kor'e-ji), . [= F. chorfgie, < Gr. x<>- 
p>!}ia, < x n Piy"fi choragus: see choragus, chore- 
gus.] Same as choragy. Grote. 
chorei, . Plural of choreus. 
choreic (ko-re'ik), a. [< chorea + -ic; = F. cho- 
reique.] Pertaining to chorea; affected with 
chorea : as, a choreic patient. 
The upper and lower extremities present the greatest 
mass of the choreic movements. 
/'. Warner, Physical Expression, p. 115. 
choreifonn (ko-re'i-form), a. [< L. chorea + 
forma, shape, form.] Resembling chorea ; cho- 
reoid: as. chorciform movements. 
as n. [NL., < Gr. xfyiov, a membrane (choroid), 
+ L. capillaris, capillary.] The inner layer of 
the choroid coat of the eye, formed largely of 
capillaries : an abbreviation of the phrase mem- 
brana or tunica chonocapillaris. Also called 
tunica Rtiyschiana and tunica rasculosa Halleri. 
chorion (ko'ri-on), n. ; pi. choria (-a). [NL. (> 
F. Sp. Pg. choriou = It. corio), < Gr. "x&piov, fetal 
membrane, any membrane. Cf. corium.] 1. 
In linn/., the outermost fetal envelop; the ex- 
ternal membrane which invests the embryo, 
forming in the higher vertebrates the outer 
layer of the t>ag of waters, and contributing 
to the formation of the placenta. With reference 
to the embryo, it occupies the relation of the original 
vitelline membrane or cell-wall of the ovum. 
2. By analogy (a) The membrana putaminis 
or egg-pod of those eggs which have calcareous 
shells. [Rare.] (b) The external investment 
of the ovum of an insect, derived from the epi- 
thelial layer of the oviduct Chorion frondo- 
aum, the tufted or shaggy part of the chorion, which com- 
poses the fetal placenta. Chorion laeve, the smooth 
part of the chorion, which does not enter into the com- 
position of the placenta. 
chorionic (ko-ri-on'ik), a. [< chorion + -ic.] 
Of or pertaining to the chorion : as, the chori- 
onic membrane; chorionic villi. 
choristate (ko-ris'tat), a. [< Gr. 
separable, separate (< x u P'& lv t separate: see 
chorisis), + -ate 1 .] In hot., increased in num- 
ber by chorisis ; affected with chorisis. 
chorister (kor'is-ter), . [< chorist + -er. Cf. 
quirister, after quire*-.] 1. A singer in a choir 
or chorus; specifically, a male member of a 
church choir. 
The Choriiters the joyous Antheme sing. 
Spenser, Epithalamion, 1. 221. 
Sometimes there are on the cathedral foundation minor 
canons, and always precentors, lay vicars, and choruten. 
A. t'ottblanque, Jr., How we are Governed, x. 
2. In some churches, a choir-leader or precen- 
tor; one who leads the singing of the choir or 
the congregation. 3. A singer in general: as, 
the feathered choristers. 
The new-born phoenix takes his way ; 
Of airy choristers a numerous train 
Attend his progress. Dryden. 
Choristes (ko-ris'tez), n. [NL., < Gr. x a P' ar ^j 
separate (^up((rr/f, one who separates) : see 
choristate.'] A genns of gastropods, typical of 
the family Choristida*. 
choristic (ko-ris'tik), a. [< chorist + -ic.] Be- 
longing to a choir ; choric; choral. [Rare.] 
Choristida (ko-ris'ti-da), n. pi. [NL., < Gr. 
Xaptar&i;, separate, separable (see choristate), + 
-ida.] In Sollas's classification of sponges, an 
order of Tetractinellida, contrasted with the 
order Lithistida, and defined as tetraetinellid 
sponges with quadriradiate or trisene spicules 
which are never consolidated into a rigid net- 
work. 
Ohoristidae (ko-ris'ti-de), n. pi. [NL., < Cho- 
ristes + -ida;.] A family of tectibranchiate gas- 
tropods with a thick short head, a large retrac- 
tile pharynx, and well-developed jaws. They have 
an odontophore, with three rows of rachidian teeth, on 
each side a row of broad bilobed inner lateral teeth, and 
two rows of small hook-shaped outer lateral teeth. They 
have also small posterior tentacles and frontal tentacles, 
united by a fold. The shell is heliciform and provided with 
a paucispiral operculum. The family was constituted from 
a living and fossil species of the North Atlantic. 
choristidan (ko-ris'ti-dan),a.andi. I. a. Per- 
taining to or having the characters of the Cho- 
ristida. 
II. . A sponge of the order Chortetida. 
choristopod (ko-ris'to-pod), n. One of the Cho- 
ristopoda ; a choristopodous crustacean. J. D. 
Dana. 
Choristopoda (ko-ris-top'o-da), n. pi. [NL., < 
Gr. ^-up/oTof, separate (see choristate), + itws 
(voS-) = E. foot.] In Dana's classification, an 
order of edriophthalmous crustaceans, approx- 
imately equivalent to the amphipods and iso- 
pods together, and divided into three groups. 
