COL 



57 



CON- 



together and somewhat isolated ; 

 a group of bacteria in a culture 

 (dial.) ; term appl. all the " persons " 

 in a colonial Coelenterate (zool.). 



columella (kgl'iimeTa) n. [L. columen, 

 a column.] A prolongation of the 

 stalk into the sporangium (bot.) ; 

 the central pillar in the skeleton of 

 some corals ; the rod, partly bony, 

 partly cartilaginous, connecting the 

 tympanum with the inner ear in 

 birds, reptiles, and amphibians ; the 

 central pillar in gasteropod shells 

 (zool.) ; the axis of the cochlea 

 (ana/.). 



columellar (kol'umeTar) a. [L. colu- 

 men, a column.] Pert, a colu- 

 mella. 



column (kol'um), columna (kolum'na) 

 n. [L. columen, a column.] Any 

 structure likened to a column, as 

 spinal column ; the actinian body ; 

 the stalk of a crinoid ; a longitudinal 

 bundle of nerve fibres in the white 

 matter of the spinal cord (zool.) ; 

 the nasal septum edge ; thick 

 muscular strands found in the 

 ventricle of the heart (anat.) ; the 

 stamens in the mallows ; the united 

 stamens and pistil in the orchids 

 (bot.). 



columnals (kolum'nalz) n. plu. [L. 

 columen, a column.] Stem ossicles 

 in crinoids (zool.). 



columnar (kSlum'nar) a. [L. columen, 

 a column.] Pert, a column or 

 columna. 



coma (ko'ma) n. [Gk. kome, hair.] 

 A terminal cluster of bracts as in 

 the pine-apple ; hairs found on 

 certain seeds (bot.) ; stupor (pkys.). 



comb-ribs, combs, see swimming- 

 plates. 



comes (ko'mez) n. [L. comes, a com- 

 panion.] A blood-vessel that runs 

 alongside a nerve (anat.}. 



comitalia (kom'Ital'Ia) n. plu. [L. 

 comitari, to accompany.] Small 

 di- or tri-actine spicules which 

 accompany the principal spicules 

 in sponges (zool.). 



commensal (komfin'sal) n. [L. cunt, 

 with ; mensa, a table.] An organism 

 living with another and sharing 

 the food, both species as a rule 

 benefiting by the association. 



comminator (kom'Inator) a. [L. cum, 



with ; minarf, to threaten.] 

 muscles which connect adjacent 

 jaws in Aristotle's lantern (zool.). 



commissure (kSm'lsur) n. [L. cum, 

 together ; mittere, to send.] The 

 union-line between two parts ; a 

 connecting band of nerve tissue 

 (zool., anat.) the carpellary co- 

 hesion plane (dot.). 



communistic (kom'unis'tik) a. [L.com- 

 munis, common.] Appl. animals 

 which live or have their nests 

 together. 



comose (ko'mos) a. [L. comosus, 

 hairy.] Furnished with a tuft of 

 hairs (bot.). 



compass (kom'pas) n. [L. cum, to- 

 gether ; passus, a pace.] A curved 

 bifid structure, part of Aristotle's 

 lantern (zool.). 



complemental male, a purely male 

 form, usually small, found living in 

 close proximity to the ordinary 

 hermaphrodite form in certain 

 animals, as barnacles. 



complexus (kompleVsus) n. [L. cum, 

 together ; plectere, to knit.] An 

 aggregate ; appl. muscles (anat.). 



complicant (kSm'plikant) a. [L. cum, 

 together ;pltcare, to fold.] Folding 

 over one another ; appl. the elytra 

 of certain insects (zool.). 



complicate (kfim'pllkat) a. [L. cum, 

 together ; plicare, to fold.] Folded ; 

 appl. insect wings (zool.) ; appl. 

 leaves folded longitudinally so that 

 the right and left halves are in 

 contact (bot.). 



composite (kom'poslt) a. [L. cum, 

 together ; ponere, to place.] Having 

 the characteristics peculiar to the 

 Compositae (oof.). 



compound (kom'pownd) a. [L. cum, 

 together ; ponere, to place.] Made 

 up of several elements; appl. flowers, 

 leaves, eyes. 



compressor (komprgs'or) n. [L. cum, 

 together ; premere, to press.] Some- 

 thing that serves to compress ; appl. 

 muscles (anat.). 



conarium (kona'rmm) n. [Gk. kona- 

 rion, a little cone.] Transparent 

 deep-sea larva of Vellella with red 

 endoderm (zool.). 



concentric (konsgn'trik) a. [L. cum, 

 together ; centrum, a centre.] 

 Having a common centre (biol.) ; 



