296 APPENDIX. 



mo'-lar (Lat. molere, to grind), a grinding tooth. 



Mol-lus'-ca (Lat. mollis, soft), mollusks. 



mo'-tile (Lat. movere), having power of motion. 



mu'-cous (Lat. mucus, mucus). 



Myr-i-ap'-o-da (Gr. murios, numberless, and pous, podos, foot). 



na'-sal (Lat. nasus, the nose), pertaining to the nose. 



ne-phrid'-i-a (Gr. nephros, kidney). 



neu'-ral (Gr. neuron, a nerve), pertaining to the nervous system or some 

 part of it. 



nic'-ti-tat-ing (Lat. nictare, to wink). 



no'-dus (Lat. nodus, a knot). 



no'-tum (Gr. notos, back). 



nu'-chal (Lat. nucha, the nape). 



nu'-cle-us (Lat. dim. of nux, nucis, a nut). 



nymph (Lat. Nympha [myth.] , goddess of meadows, waters, forests, etc.). 



ob'-tu-ra-tor (Lat. obturare, to stop up). 



oc'-ci-put (Lat. ob, against or back of, and caput, head). 



o-cel'-lus, pi. ocelli (Lat. dim. of oculus, eye). 



oc-u-lo-mo'-tor (Lat. oculus, the eye, and movere, to move). 



O-don'-a-ta (Gr. odous, odontos, a tooth). 



o-don'-toid (Gr. odous, a tooth, and eidos, form). 



o-lec'-ra-non (Gr. olene, elbow, and kranion, head). 



ol-fac'-to-ry (Lat. olere, to smell, and facere, to make), pertaining to 

 the sense of smell. 



o-mo-s'ter'-num (Gr. omos, shoulder, and sternon, breast). 



o'-b'-sperm (Gr. don, egg, and sperma, seed), the fertilized ovum. 



o-per'-cu-lum (Lat. from operire, to cover). 



op'-tic (Gr. optikos, belonging to sight), pertaining to the eye. 



o'-ral (Lat. os, oris, mouth), pertaining to the mouth. 



or'-bit (Lat. orbis, a circle). 



or'-i-fice (Lat. os, mouth, and facere, to make). 



Or-thop'-te-ra (Gr. orthos, straight, and pteron, a wing), the straight- 

 winged insects. 



os cru'-ris (Lat. os, bone, and cruris, leg). 



os-mo'-sis (Gr. osmos, impulse). 



os'-si-fy (Lat. os, ossis, a bone), to become bone. 



os'-si-cle (Lat. dim. of os, a bone), a little bone. 



os'-te-ole (Lat. dim. of ostium, mouth). 



os-te-ol'-o-gy (Gr. osteon, bone, and logos, discourse). 



o'-va-ry (Lat. ovarium, from ovum, egg). 



o'-vate (Lat. ovum, egg), egg-shaped. 



o'-vi-duct (Lat. ovum, egg, and ductus, duct, tube). 



