The University of Sydney
Anatomy & Histology
Arnold's Glossary of Anatomy
by Dr. M. A. (Toby) Arnold
Modifications & Additions by Deborah Bryce
This anatomical word search engine is dedicated to the memory of
Maurice (Toby) Arnold
(type full word or first few letters)
: Latin = barrier; hence, the coronal fold of ependyma over the lower angle of the 4th ventricle.
: adjective, Latin obliquus; slanting, or deviating from the perpendicular or the horizontal.
: Latin oblongus = oblong; medulla oblongata.
: Latin obturatus = stopped up; hence, a structure which closes a hole.
: Latin ob = prominent (cf. obvious), and caput = head; hence, the prominent convexity of the back of the head; adjective - occipital.
: Latin occlusum = closed up; hence, apposition of reciprocal teeth, or the blocking of any tubular structure; adjective - occlusal.
: Latin oculus = eye, and movere = to move, hence, pertaining to moving the eye.
: Latin = eye.
: Greek odous = tooth, and eidos = form, shape, hence, tooth-like.
: Greek = gullet (passage from pharynx to stomach); adjective - oesophageal.
: Greek olene = ulna, and kranion = upper part of head; hence, the upper end of the ulna.
: adjective, Latin olfacto = smell.
: Latin oliva - the oval fruit of the olive tree; oval eminence on medulla oblongata; adjective - olivary.
: Latin = apron; adjective - omental.
: Greek omos = shoulder; hence, a muscle attached to the scapula and hyoid.
: Latin = lid or cover; hence, operculum insulae, the cerebral cortex covering and hiding the insula (the 5th lobe of cerebral cortex).
: adjective, Greek ophthalmos = eye.
: Latin = placing against, opposing.
: Latin oppositum = put against; hence, to resist or place in contact with, and opposition - the action of opposing.
: adjective, Greek optos = seen; hence, pertaining to sight.
: Latin ora = margin or edge.
: Latin ora = margin, and serra = saw; hence, the serrated anterior edge of the functional part of the retina.
: Latin oris = a mouth, hence, pertaining to the mouth.
: Latin orbis = circle; the name given to the bony socket in which the eyeball rotates; adjective - orbital.
: Latin orificium = opening.
: Latin os = mouth; plural - ora, adjective - oral.
: Latin os = bone; plural - ossa, adjective - osseous.
: Latin ossiculus, diminutive of os = bone.
: Latin os = bone, and facio = make; hence, to form bone; and ossification, the process of bone formation.
: Greek osteon = bone, and logy = a field of study.
: Latin = a door, an opening, an orifice.
: adjective, Greek otos = ear.
: Greek otos = ear, and lithos = stone; hence, calcareous particles in the utricle and saccule of the membranous labyrinth.
: Latin ovum = egg; hence, the organ containing ova (the largest cells in the female).
: Latin = egg, plural - ova.