cyclostome 
II. n. 1. A fish of the order I 'i/rl, ,.-.-/, m/i : :i 
marsipobranch ; a monorhiiie ; n kunprey or 
hafj. 2. A ;r;i>tropod of the family I'ljrlimln- 
iniilii: 
Oyclostomi (si-klos'to-mi), n. pi. [NL., pi. of 
ri/cliiKtiiiniif,-: see cyologtomouf.] In Cuvier*!* 
system of classification, the second family of 
his second <>rdvr,('h<i(troiileri/yii brancliiis jixis, 
with the mouth formed into a sucker, contain- 
ing the lampreys mid liags, or the cyclosto- 
mous, inonornine, or marsipobraiichiate fishes : 
a synouym of IfarsipotftUteikH, 
cyclostomid (s!-klos'to-mid), n. A gastropod 
of the faiiiilv Ci/1-ln.i/iiiiiiilir. 
Cyclostomidae (si-klo-stom'i-de), n. fit. [NL., 
<T CycliKttoina + -((/.] A family of tienioglos- 
sate gastropods to which different limits have 
been assigned. () By the old writers It was extended 
to all the open-Hint*- land-shells. (It) Later it WHS liuiilnl 
ill) ;i riiviilur ap:rture to tin- -shell, (c) By 
in- with 
to 
most mutliTn nmchologlsts it Is restricted to form . 
comparatively narrow lateral teeth bearinK several cusps, 
broad marginal 
teeth having ser- 
rated or pectiniforni 
crowns, a spiral 
shell with a siibcir- 
cular aperture, and 
a paueispiral oper- 
Cycliutoma tltfans. euluin. The species 
are numerous in 
tropical and subtropical countries, and a few, as Cyclnstu- 
mo fleijnus, extend into temperate regions. They are chief- 
ly found in forests and damp places. The under surface 
of the foot is impressed by a longitudinal groove, and the 
sides are alternately moved in progression, while the long 
rostrum is used for pulling forward. 
Oyclostominae (si'klo-sto-ml'ne), . pi. [NL., 
< Cyckmtoma + -iii(e.\ A subfamily of Cyclosto- 
mida', containing the typical species, and con- 
trasting with the subfamilies CistuUnw, Licinei- 
ntp. and Realtime. 
cyclostomous (sl-klos'to-mus), a. [< NL. cyelo- 
gtomus, < Gr. /twtXof, a circle, + orvfia, mouth.] 
Having a round mouth, as a lamprey, or a round 
aperture of the shell, as a cyclostomid ; specifi- 
cally, in ichth., pertaining to the Cyclostomi. 
Also cyclostomate, cyclostome. 
Cyclostomus (si-klo's'to-mus), n. [NL. : see cy- 
clostomow.] Same as Cyclostoma, 1. 
Cyclostrema (si-klo-stre'mH,), n. [NL., improp. 
for "Cyclotrema, < Gr. KiV/iof, circle, + Tpi/fm, 
hole.] A genus of gastropods, typical of the 
family Cyclostremidce. 
Cyclostremidse (si-klo-strem'i-de), n. pi. [NL., 
' Cyclostrema + -trfa;.] A family of rhipido- 
glossate gastropods, typified by the genus Cy- 
clostrema. They have ciliated filiform tentacles, lateral 
cirrous appendages, a wide median tooth and four nar- 
row teeth on each side, and marginal teeth with denticu- 
lated liorders ; the shell is depressed, umbilicated, non- 
nacreous, and white. The species arc of small size and 
found iu almost all seas. 
cyclostylar (sl-klo-sti'lar), a. [< Gr. xta/tor, 
a circle, + orutac, pillar, style, + -r 2 .] In 
arch., consisting of a circular range of col- 
umns; monopteral. 
cyclostyle (si'klo-stil), n. [< Gr. KwcJ.of, a cir- 
cle, + oTi'Aof, a pen.] An apparatus for mak- 
ing duplicate copies of letters, circulars, etc., 
written on sensitized paper with a pen of pe- 
culiar make, or with a typewriter. The first copy 
is used as an impression-plate, and inked with an inking- 
roller to produce subsequent copies. 
cyclosystem (si-klo-sis'tem), n. [< Gr. id-nfof, 
a circle, + ai-arr/ua, system.] The circular ar- 
rangement of the pores of certain hydrocoral- 
line acalephs (the stylasterids), simulating the 
calicular systems of anthozoan corals in ap- 
pearance. Mosfley, 1881. 
cyclothure (si'klo-thur), . An animal of the 
genus Cyclotlinrus; a two-toed ant-eater. 
1 !_'.-, 
Cyclothurinae (si'klo-thu-ri'ne), n. i>l. [NL., 
' ('ijcliitliiiriiK + -inn:'} A subfamily of South 
American arboricole ant-eaters, of the family 
Mi/run <<,/, liiii/nlti'; the two-toed ant-eaters of 
the single genus Cyi-Mliurii.i. The first, fourth, 
and fifth digits of the fore paws are o reduced that only 
two are vUilde externally, and tin- inner >!igil of the hind 
foot is likewise rudimentary. These ant-eaters live in 
111 TV ;lllll I I'S'-lnltlr IslotllS. 
cyclothurine (si-klo-thu'rin), a. and n. I. a. 
Pertaining to the subfamily Cyclothurinai. 
H. n. One of the Cyrlntliurini?; acyclothure. 
Also written cycloturine. 
Cyclothunis (si-klo-thu'rus), n. [NL., for Cy- 
cloliiriiH, < Gr. Kwc/Airof, round (see Cyclotus), + 
ovpa, a tail.] The typical and only genus of 
the subfamily Cyclothurinte, containing the lit- 
tle two-toed ant-eater of Brazil, C. didactijlnx, 
and a species of Costa Rica, C. dorsalix. See 
l 'i/i-lothurinee. 
cyclotid (si-klot'id), n. A gastropod of the 
family Cyclotida. 
Cyclotidae (si-klot'i-de), n. pi. [NL., < Cyclo- 
tus + -ida:] A family of phaneropneumonous 
tanioglossate gastropods. The eyes are situated at 
the outer bases of the tentacles ; the outer lateral teeth 
of the r.nl M l.i are little differentiated from the others ; 
there are 10 jaws ; and the shell is spiral with a circular 
aperture, closable by a multispiral operculum. Same as 
' 
cyclotomic (si-klo-tom'ik), a. [< Gr. 
circle^ + ro/iq, a 'cutting, + -ic.] In geom., 
pertaining to the theory of the division of the 
circumference of a circle into aliquot parts. 
Cyclotomic divisor. See divisor. 
cycloturine, Oyclotums. See cyclothurine, Cy- 
clothitrus. 
CyclotUS (si-klo'tus), n. [NL., < Gr. /nw/Wrof, 
rounded, < KVK/.OVV, make round, < Kr/c/'.of, a cir- 
cle.] A genus of gastropodpus mollusks, of the 
family Cyclapliorida, or giving the name Cyclo- 
tidai to the same group. 
Oyclura (si-klS'ril), n. [NL., < Gr. /cf/cXof, a 
circle, + oiip6, tail.] A genus of lizards, of the 
Tw-o-tocd Ant-eater ( Cyclothurus ttidactylus). 
90 
Spine-tailed Lizard (Cj/cfura acanthttra). 
family Iguanidw. C. lopkmna is the great iguana of 
Jamaica, with a long serrate dorsal crest. C. acanthura 
Is the spine-tailed lizard of Lower California. C. tens, of 
the same region, is the smooth-backed lizard, 
cyclus (si'klus), . [LL., < Gr. id>/t/iof, a cir- 
cle: see cycle.] 1. PI. cycH (si'kli). Same as 
cycle, 5. 
Oonzalo de Cordova, "the Great Captain," . . . pro- 
duced an impression on the Spanish nation hardly 
equalled since the earlier days of that great Moorish con- 
test, the cycliiit of whose heroes Oonzalo seems appropri- 
ately to close up. Ticknur, Span. Lit., I. 181. 
2. [cap.] [NL.] A genus of fossil crustaceans 
of uncertain character. 
cydariform (si-dar'i-f6rm) ; a. [< L. cydarum 
(< Gr. xi'da/mf), a kind of ship, + forma, shape.] 
In cntom., approaching the form of a globe, 
but truncated on two opposite ends : applied to 
joints of the palpi, etc. 
cydert, n. See cider. 
Cydippe (si-dip'e), . [NL., < L. Cydippe, < Gr. 
KwiiTnrv, in myth, a fern, name, a Nereid, etc. ; 
appar. < /cinSof, glory, renown, + in-irof, fern. 
iiTTn/, horse.] 1. In zodl., the typical genus of 
ctenophorans of the family Cydipptdce, having 
retractile filiform fringed tentacles, and a 
transparent colorless gelatinous body, divided 
radially into eight parts by the ctenophores. 
One member of the genus, C. pileus, is a very tieautiful ob- 
ject, and is cuminim in I lie seas around Great Britain. The 
body is globular in shape, and adorned with right bands 
of cilia, serving as its means of locomotion and pn-si-ntiiiL: 
brilliant rainbow hues. From the ln>dy are pendent two 
1-mu Illaiiifiits. to which are attached numerous shorter 
threads, and which can be protruded and retracted at 
will. Also called Pleurvbrachia, and formerly referred 
to a family CaUianirida. See cut under Ctenophora. 
Cygnus 
2. A genus of spiders. Rev. O. P. Camt>ridge, 
1H40. 3. In i iitmii., a genus of beetles. 
cydippid (si-dip'id), n. A ctenophoi-an of the 
family ' //<''/'/'"'"' 
Cydippidae (si-dip'i-de), n. pi. [NL., < Cydippe, 
1, + -idle."} A family of saccate ctenophorans, 
typified by the genus ' 'i/ili/i/n . 
Cyqonia (si-do'ni-il), . [NL., < L. cydonia, a 
quince (> lilt. K. coin-, quince, q. v. ), prop. pi. 
(sc. mala, apples) of rv</m//-, adj.; < Gr. nvn>- 
vtov (sc. /Jf/'fjav, apple), a quince, avtiuvia, a quince- 
tree, neut. and fern, of Kvouviof, adj., pertaining 
to Kviuvia. L. Cydonia, a town of Crete, now 
Canea.] 1. A rosaceous genus of plants, in- 
cluding the quince, etc., now referred to Pyru#. 
2. In cntom., a genus of ladybirds, family 
I'lin-iiii l/iiin: ilulant. 
cydonin (si'do-nin), n. [< Cydonia, 1, + -in 2 .] 
The mucilage of quince-seeds. 
cydonium (si-do'ui-um), . [See Cydonia.'} 
Quince-seed. 
cyesiognosis (si-e'si-og-no'sis), n. [< Gr. ni<ri- 
aic, pregnancy, + yviJoic, knowledge.] Diag- 
nosis of pregnancy. Dungliwii. 
cyesiology (si-e-si-ol'o-ji), n. [< Gr. ni^aif, 
pregnancy (see cyesin), + -tj>yia, < U yew, say : 
see -ology.~} Inpltysiol., the science which treats 
of gestation or pregnancy. 
cyesis (si-e'sis), . [NL., < Gr. ni'r/oif, preg- 
nancy, < xvelv, be pregnant.] Pregnancy; con- 
ception. Dunalison. 
cygneous (sig'ne-us), a. [< L. cygnim, cyonis, 
a swan: see cygnet.] In bryology, curved like 
a swan's neck. Braithwaite. 
cygnet (sig'net), n. [Formerly cignet, < OF. 
dgnet, equiv. to "cignel, cigneau, dim. of cignf, 
F. cygne = Pr. cigne = It. cigno, a swan (cf. OF. 
eisne = Sp. Pg. cisne, OPg. cirnc = Olt. cecino, 
It. cecero, a swan, < ML. cecinus, cicinus, a cor- 
ruption of L. cycnus), < L. cycnus, often written 
cygnun, < Gr. unvoc, a swan, prob. redupl. from 
V *KW, *nav, sound, = L. caiiere, sing. From the 
same root come L. ciconia, a stork, and E. Inn. 
See cant 2 , chant, hen.] A young swan; specifi- 
cally, in her., a small swan. Swans, when more 
than one are borne, are commonly called cygnets, though 
the representation is exactly the same as that of the swan 
so called. 
So doth the swan her downy cygnet* save, 
Keeping them prisoner underneath her wings. 
.SAo*., 1 Hen. VI., v. 3. 
Cygnet royal, in her., a term for a tearing more properly 
blazi i i ed n HW ryent , tlucall y yorpctl (tntic/iatnedor that 
Is, having a duke's coronet around its neck and a chain at- 
tached thereto. //;/* Clark. 
Cygninse (sig-ni'ne), n. pi. [NL., < Cygnm, 1, + 
-I'HW.] A subfamily of lamellirostral natatorial 
birds, of the duck family, AnatidtB ; the swans. 
They have the longest neck of any birds of this family, the 
vertebra; being very numerous (up to 4H) ; the tail is short 
and many-feathered : the tarsus is reticulate ; the lores are 
naked ; the bill is high at the base, and sometimes tuber- 
culate, with median nostrils ; the feet are large ; the mid- 
dle toe and claw are longer than the tarsus ; and the hallux 
U simple. The legs are set far back, so that the gait is 
constrained, but in the water the swans are proverbially 
elegant and graceful. There are 8 or 10 species, of various 
countries, chiefly of the genus Ct^/nwx. See man. 
cygnine (sig'nin), a. Pertaining to or having 
the characters of the Cygnintf. 
Cygnopsis (sig-nop'sis), n. [NL. (Brandt, 1336), 
< L. cygnug, a swan, + Gr. o^;r, view, appear- 
ance.] A genus of geese, of the subfamily .4n- 
xerime and family A na tida' : so called from their 
swan-like appearance. The type and only spe- 
cies is the Chinese goose, ( '. cygnoides, common 
in domestication. 
Cygnus (sig'mis), . [NL., < L. cygnus, prop. 
cycnus, a swan: see rygnet.] 1. The typical 
genus of the subfamily Cygnince, formerly con- 
terminous with it, but now including all the 
white swans, or even restricted to those which 
