COE- 



56 



COL- 



the various polyps in a compound 

 colony (zool.}. 



coenosteum (senos'teum) n. [Gk. 

 koinos, common ; osteon, a bone.] 

 The common colonial skeleton in 

 corals (zool.). 



coenurus (senu'riis) n. [Gk. koinos, 

 common ; aura, a tail/] A meta- 

 cestode with large bladder, from 

 the walls of which a very large 

 number of heads are formed 

 (zool.). 



coherent (kohe'rSnt) a. [L. cohaerere, 

 to stick together.] With similar 

 parts united (bot.). 



cohesion (kohe'zhun) n. [L. cohaerere, 

 to stick together.] The condition 

 of union of the separate parts of a 

 floral whorl (bot.}. 



cohort (ko'hort) n. [L. cohort, an 

 enclosure.] Used in earlier clas- 

 sifications to denote a somewhat 

 indefinitely limited group (bwl.). 



coleopterous (kol'eop'tgrus) a. [Gk. 

 koleos, a sheath ; pteron, a wing.] 

 Having the anterior wings hard 

 and used as elytra (zool.). 



coleorhiza (kol'eori'za) n. [Gk. koleos, 

 a sheath ; rhiza, a root.] The layer 

 surrounding the radicle (bot.). 



colic (kol'ik) a. [Gk. kolon, the colon.] 

 Pert, the colon (anat.). 



collagen (k61^j6n) . [Gk. kolla, 

 glue ; genos, offspring.] A protein 

 substance, probably an anhydride 

 of gelatin, occurring as the chief 

 constituent of the white fibres of 

 connective tissue and the organic 

 part of the bones (phys.). 



collar (kol'ar) n. [M.E. coler, a 

 collar.] The choana of a collared 

 cell ; a prominent fold behind the 

 proboscis in the Hemichorda ; the 

 fleshy rim projecting beyond the 

 edge of a snail shell ; any structure 

 likened to a collar (zool.}. 



collateral (kolat'eral) a. [L. cum, 

 with ; latera, sides.] Side by 

 side ; appl. bundles, as collateral 

 bundle, with xylem and phloem in 

 contact on one side only (dot.} ; 

 appl. fine lateral branches from the 

 axon of a nerve cell (anat.). 



collateral circulation, circulation 

 established through anastomosis 

 with other parts when the chief 

 vein is obstructed (phys}. 



collenchyma (koleng'kima), collen- 

 chyme (kolgng'klm) n. [Gk. kolla, 

 glue ; engchyma, infusion.] Paren- 

 chymatous tissue, with cells elon- 

 gated and thickened at the angles 

 (bot.) ; the middle layer of sponges 

 (zool.). 



collencyte (kol'enslt) n. [Gk. kolla, 

 glue ; kytos, hollow.] A clear cell 

 with thread-like pseudopodia found 

 in sponges (zool.}. 



colleterium (ksrete'rfum) n. [Gk. 

 kolla, glue.] A mucus-secreting 

 gland in the female reproductive 

 system of insects (zool.}. 

 colleters (kole'terz) n. plu. [Gk. 

 kolla, glue.] The hairs, usually 

 secreting a gluey substance, which 

 cover many resting buds (bot.}. 

 colletocystophore (kole'tosist'ofor) n. 

 [Gk. kolla, glue ; kystis, a bladder ; 

 pherein, to bear.] The statorhab of 

 Haliclystus (zool.). 



colliculus (kollk'ulus) n. [L. colli- 

 culus, a little hill.] One of the 

 prominences of the corpora quadri- 

 gemina ; a rounded elevation near 

 the apex of the antero-lateral surface 

 of the arytaenoid cartilage (anat.). 

 colloblast (kol'dblast) n. [Gk. kolla,. 

 glue ; blastos, a bud.] A cell on 

 the tentacles and pinnae of Cteno- 

 phores, which carries little globules 

 of adhesive substance (zool}. 

 colloid (kol'oid) n. [Gk. kolla, glue ; 

 eidos, form.] A gelatinous sub- 

 stance which does not readily 

 diffuse through an animal or veget- 

 able membrane ; opp. crystalloid. 

 collophore (kol'ofor) n. [Gk. kolla, 

 glue ; pherein, to bear.] The 

 ventral tube of the Collembola 

 (zool.}. 



collum (kfil'um) n. [L. collum, the 

 neck.] Any collar-like structure 

 (biol.) ; the basal portion of the 

 sporogonium in mosses (bot.). 

 colon (ko'lon) n. [Gk. kolon, the 

 colon.] The second portion of the 

 intestine of insects ; the part of the 

 large intestine stretching from its 

 junction with the small intestine to 

 the rectum (zool., anat.). 

 colony (kol'onl) n. [L. colonia, a 

 farm.] Any collection of organisms 

 living together, appl. ants, bees ; 

 a group of animals or plants living 



