OCT- 



213 



OES- 



the division of the fertilized ovule 



in plants (dot.) ; one of the units 



in the eight-celled stage in the 



segmentation of the ovum (zool.}. 

 octogynous (oktoj'mus) a. [Gk. okta, 



eight ; gyne, a woman.] Having 



eight pistils (bot.}. 

 octopetalous (ok'topeYalus) a. [Gk. 



okta, eight ; petalon, a petal.] 



Having eight petals (hot.). 

 octopod (ok'topod) a. [Gk. okta, 



eight ; pous, a foot.] Having 



eight feet or arms (zool.'). 

 octoradiate (ok'tora'diat) a. [L. octo, 



eight ; radius, a spoke.] Having 



eight rays or arms (zool.}. 

 octosepalous (ok'tosep'alus) a. [Gk. 



06 fa, eight ; sepalon, a sepal.] 



Having eight sepals (bot.}. 

 octosporous (ok'tospo'rus, oktos'porus) 



a. [Gk. okta, eight ; sporos, a seed.] 



Having eight spores (bot.}. 

 octostichous (oktSs'tikus) a. [Gk. 



okta, eight ; stichos, a row.] Having 



the leaves in eights, as in phyllo- 



taxis (bot.}. 

 octozolc (ok'tozo'lk) a. [Gk. okta, 



eight ; zoon, an animal.] Appl. 



a spore of Gregarines, containing 



eight sporozoites (zool.}. 

 ocular (Sk'ular) a. [L. oculus, an eye.] 



Pert, or perceived by the eye. 

 ocular lobe, the projecting thoracic 



lobe in some beetles (zool.}. 

 ocular plates, the plates at the 



end of the ambulacral areas in sea 



urchins (zool.}. 

 oculate (ok'ulat) a. [L. oculus, an 



eye.] Having eyes, or having eye- 

 like spots (zool.}. 

 ocullferous (ok'ulTf'Srus), oculigerous 



(6k'ulTj'6riis) a. [L. oculus, eye; 



ferre, gerere, to carry.] Bearing 



eyes (zool.}. 

 oculofrontal (ok'ulofriin'tal) a. [L. 



oculus, eye ; frons, forehead.] Pert. 



region of forehead and eye. 

 oculomotor (6k'uloino't6r) a. [L. 



oculus, eye ; move re, to move.] 



Causing the movements of the 



eyeball ; appl. the third cranial 



nerve (anat., zool.}. 

 oculonasal (ok'ulona'zal) a. [L. ocuhts, 



eye; nasus, nose.] Pert, eye and nose. 

 oculus (Sk'ulus) n. [L. oculus, eye.] 



The eye (anat., zool.} ; a leaf-bud in 



a tuber (bot.}. 



odontoblast (odon'toblSst) . [Gk. 

 odous, a tooth ; blastos, a bud.] 

 One of the columnar cells on the 

 outside of the pulp that form the 

 dentine (zool.}. 



odontoclast (odfin'toklast) n. [Gk. 

 odous, a tooth ; klan, to break.] 

 One of the large multinucleate 

 cells that absorb the roots of the 

 milk teeth (zool.}. 



odontogeny (odontqj'eni) n. [Gk. 

 odous, tooth ; genos, offspring.] The 

 origin and development of teeth. 



odontoid (odon'toid) a. [Gk. odous, 

 tooth ; eidos, form.] Tooth-like ; 

 pert, the odontoid process. 



odontoid process, a tooth-like peg 

 on the axis round which the atlas 

 rotates, it is the centrum of the 

 atlas, which has first become free 

 and finally fused with the axis 

 (anat., zool.}. 



odontophore (odSn'tofor) n. [Gk. 

 odour, tooth ; pherein, to carry.] 

 The radula or tooth-bearing organ 

 in Molluscs; a structure over which 

 the radula slides (zool}. 



odontoplast (6d8n'topl&st) n. [Gk. 

 odous, tooth ; plastos, moulded.] 

 An odontoblast cell (anat.}. 



odontostomatous (odon'tostom'atus) 

 a. [Gk. odous, tooth ; stoma, mouth.] 

 Having tooth-bearing jaws. 



oecoid (e'koid) n. [Gk. oikos, a house.] 

 The stroma of a blood corpuscle 

 (anat}. 



ecology (ekol'qjl) n. [Gk. oikos, 

 house ; logos, discourse.] Bio- 

 nomics, which see. 



oedematin (edgm'atin) n. [Gk. oidema, 

 a swelling.] The microsomes of 

 the ground substance of the nucleus 

 (cyt.}. 



oenocyte (e'nosit) n. [Gk. oinos, wine ; 

 kytos, hollow.] One of the large 

 cells from the clusters which sur- 

 round the trachea and fat body of 

 Insects (zool.}. 



oesophageal (esof'aje'al) a. [Gk. 

 oisophagos, the gullet.] Pert, or 

 near the oesophagus, as ganglia 

 (zool.}. 



oesophagus (esof'agiis) n. [Gk. 

 oisophagos, the gullet.] That part 

 of the alimentary canal between the 

 pharynx and the stomach, or part 

 equivalent thereto (zool.}. 



