| OSTEOPOROSES | • osteoporoses n. Plural of osteoporosis. • OSTEOPOROSIS n. development of a porous structure in bone due to loss of calcium, resulting in brittleness. |
| ONOMATOPOESES | • ONOMATOPOESIS n. onomatopoeia, also ONOMATOPOEIA, ONOMATOPOIESIS. |
| HOMOEOMORPHIES | • HOMOEOMORPHY n. the state of being homoeomorphy. |
| OESOPHAGOSCOPE | • oesophagoscope n. Alternative form of esophagoscope. • OESOPHAGOSCOPE n. an instrument for examining the oesophagus. |
| ONOMATOPOIESES | • ONOMATOPOIESIS n. onomatopoeia, also ONOMATOPOEIA, ONOMATOPOESIS. |
| OOPHORECTOMIES | • oophorectomies n. Plural of oophorectomy. • oöphorectomies n. Plural of oöphorectomy. • OOPHORECTOMY n. the operation of removing one or both of the ovaries, aka ovariotomy. |
| OOPHORECTOMISE | • oophorectomise v. Alternative form of oophorectomize. • OOPHORECTOMISE v. to perform an oophorectomy, removal of one or both ovaries, also OOPHORECTOMIZE. |
| OOPHORECTOMIZE | • oophorectomize v. (Surgery) To perform, or to undergo an oophorectomy. • OOPHORECTOMIZE v. to perform an oophorectomy, removal of one or both ovaries, also OOPHORECTOMISE. |
| PALEOZOOLOGIES | • PALEOZOOLOGY n. the study of fossil animals, also PALAEOZOOLOGY. |
| PHOTOGEOLOGIES | • PHOTOGEOLOGY n. a branch of geology concerned with the identification and study of geological features through the study of aerial or orbital photographs. |
| EPIZOOTIOLOGIES | • EPIZOOTIOLOGY n. the sum of the factors controlling the occurrence of a disease or pathogen of animals. |
| GEOMORPHOLOGIES | • geomorphologies n. Plural of geomorphology. • GEOMORPHOLOGY n. the study of the landscapes of the earth and their development. |
| OESOPHAGOSCOPES | • oesophagoscopes n. Plural of oesophagoscope. • OESOPHAGOSCOPE n. an instrument for examining the oesophagus. |
| OOPHORECTOMISED | • oophorectomised v. Simple past tense and past participle of oophorectomise. • OOPHORECTOMISE v. to perform an oophorectomy, removal of one or both ovaries, also OOPHORECTOMIZE. |
| OOPHORECTOMISES | • OOPHORECTOMISE v. to perform an oophorectomy, removal of one or both ovaries, also OOPHORECTOMIZE. |
| OOPHORECTOMIZED | • oophorectomized v. Simple past tense and past participle of oophorectomize. • OOPHORECTOMIZE v. to perform an oophorectomy, removal of one or both ovaries, also OOPHORECTOMISE. |
| OOPHORECTOMIZES | • OOPHORECTOMIZE v. to perform an oophorectomy, removal of one or both ovaries, also OOPHORECTOMISE. |
| PALAEOZOOLOGIES | • PALAEOZOOLOGY n. the study of fossil animals, also PALEOZOOLOGY. |