CEL- 



45 



CEP- 



cellular (sefular) a. [L. cellula, a 

 small cell.] Pert, or consisting of 

 cells (biol.). 



cellulose (seTulos) . [L. cellula, a 

 small cell.] A carbohydrate form- 

 ing the main part of the cell walls 

 of plants, also found in the tests of 

 tunicates (biol.). 



cell-wall, the investing portion of 

 a cell, which may be extremely 

 delicate, or may be strong and 

 thick as in plants (cyt.). 



cement (sement') n. [L. caementum, 

 mortar.] A substance chemically 

 and physically allied to bone, in- 

 vesting the root, neck, and crowns 

 of teeth (zool.). 



censer mechanism, the method of 

 seed distribution by which seeds 

 are jerked out from the fruit only 

 by a high wind (dot.}. 



centradenia (seVtrade'nla) n. [L. 

 centrum, a centre.] The name 

 given to the type of siphonophore 

 colony found in the Disconectae 



central (sgn'tral) a. [L. centrum, a 

 centre.] Situated in the centre ; 

 pert, a vertebral centrum (anat.). 



centrale (sentra'le, sfintral'a) n. [L. 

 centrum, a centre.] A bone in the 

 wrist or ankle situated between the 

 proximal and distal rows (zool.). 



centric (sen'trik) a. [L. centrum, a 

 centre.] AppL leaves which are 

 cylindrical or terete (hot,}, 



centrifugal (sgntrif'ugal) a. [L. 

 centrum, a centre ; fugere, to flee.] 

 AppL compact cymose inflor- 

 escences having the youngest 

 flowers towards the outside (dot.) ; 

 appl. nerves transmitting impres- 

 sions from nerve centre to parts 

 supplied by nerve (anat.). 



centrlole (sen'trlol) n. [L. centrum, 

 a centre.] The central particle of 

 the centrosome, in some authors ; 

 in others, the centrosome itself 

 (cyt.). 



centripetal (sgntrip'gtal) a. [L. 

 centrum, a centre ; petere, to 

 seek.] Appl. racemose inflor- 

 escences having the youngest 

 flowers at the apex (dot.) ; appl. 

 nerves transmitting impressions 

 from peripheral extremities to 

 nerve centres (ana/.). 



centripetal canals, blind canals 

 growing from the circular canal 

 backwards towards the apex of 

 the bell in certain Trachomedusae 

 (zool.). 



centrodesmose (sen'trodes'mos), cen- 

 trodesmus (sgn'trodeVmus) n. [Gk. 

 kentron, a centre ; desmos, a band.] 

 The fibril or system of fibrils tempo- 

 rarily connecting the two centro- 

 somes (cyt.). 



centrodorsal (sfin'trodor'sal) a. [L. 

 centrum, a centre ; dorsum, a back.] 

 Appl. the plate in the middle of the 

 aboral surface of unstalked Crinoids 

 (zool.). 



centrogenous (sentrqj'enus) a. [Gk. 

 kentron, a centre ; genos, descent.] 

 Appl. a skeleton of spicules which 

 meet in a common centre and grow 

 outwards (zool.). 



centrolecithal (sen'trolgs'ithal) a. 

 [Gk. kentron, a centre ; lekithos, 

 yolk.] Appl. an ovum with its 

 yolk aggregated in the centre 



centroplasm (sgn'troplazm) n. [Gk. 

 kentron, a centre ; plasma, some- 

 thing moulded.] The substance of 

 the centrosphere (cyt.). 



centrosome (sen'trosom) n. [Gk. 

 kentron, a centre ; soma, body.] 

 A cell-organ, being the centre of 

 dynamic activity in mitosis, and 

 consisting of centriole and attrac- 

 tion-sphere (cyt.). 



centrosphere (sgn'trosfer) n. [Gk. 

 kentron, a centre ; sphaira, a ball.] 

 The central mass of the aster and 

 centrosome ; the astrosphere ; the 

 attraction sphere (cyt.). 



centrum (sen'trum) n. [L. centrum, 

 a centre.] The main body of a 

 vertebra, from which the neural and 

 haemal arches arise (zool.). 



cephalanthium (ket'alan'thium, sef-) 

 n. [Gk. kephale, a head ; anthos, 

 a flower.] The capitulum in com- 

 posite plants (&?/.). 



cephaletron (kgf'aletron, sfif-) n. [Gk. 

 kephale, the head ; etron, the belly.] 

 The anterior region of a Limulid 

 (zool.). 



cephalic (kefal'ik, sgf-) a. [Gk. kephale, 

 the head.] Pert, the head ; in the 

 head region. 



cephalia (kgf'alis, sgf-) . [Gk. 



