| OLDENS | • oldens v. Third-person singular simple present indicative form of olden. • Oldens prop.n. Plural of Olden. • OLDEN v. to grow old. |
| OLDEST | • oldest adj. Superlative form of old: most old. • oldest n. The oldest child in a family, or individual in a group. • OLD adj. living for a long time. |
| OLDIES | • oldies n. Plural of oldie. • OLDY n. (colloquial) an old person or thing, also OLDIE. |
| OLDISH | • oldish adj. Somewhat old. • OLDISH adj. somewhat old. |
| OLEATE | • oleate n. (Organic chemistry) any salt or ester of oleic acid. • OLEATE n. a salt of oleic acid. |
| OLEFIN | • olefin n. (Organic chemistry) Any of a class of unsaturated open-chain hydrocarbons such as ethylene; an alkene… • OLEFIN n. a hydrocarbon of the ethylene series, also OLEFINE. |
| OLEINE | • oleine n. Alternative form of olein. • OLEINE n. a glycerine ester of oleic acid, also OLEIN. |
| OLEINS | • oleins n. Plural of olein. • OLEIN n. a glycerine ester of oleic acid, also OLEINE. |
| OLEUMS | • oleums n. Plural of oleum. • OLEUM n. (Latin) fuming sulphuric acid. |
| OLFACT | • olfact v. (Transitive, rare) To smell. • OLFACT v. to smell something. |
| OLINGO | • olingo n. A small procyonid resembling the kinkajou, native to the rainforests of Central and South America. • OLINGO n. (Spanish) a small mammal of Central and South America. |
| OLIVER | • oliver n. (Archaic, rare) A small tilt hammer, worked by the foot. • Oliver prop.n. A male given name from the Germanic languages. • Oliver prop.n. A surname originating as a patronymic. |
| OLIVES | • olives n. Plural of olive. • OLIVE n. the small oval fruit of a Mediterranean tree. |
| OLIVET | • olivet n. (Historical) An imitation pearl manufactured for trade with native peoples. • Olivet prop.n. A locale in France. • Olivet prop.n. A locale in the United States. |
| OLLAMH | • ollamh n. (Historical) In Irish history, a man of science or learning, equivalent to a university professor. • OLLAMH n. (Irish) an Irish master poet, also OLLAV. |
| OLLAVS | • ollavs n. Plural of ollav. • OLLAV n. (Irish) an Irish master poet, also OLLAMH. |
| OLLERS | • Ollers prop.n. Plural of Oller. • OLLER n. (dialect) waste ground. |
| OLLIED | • ollied v. Simple past tense and past participle of ollie. • OLLIE v. to perform a certain kind of jump into the air in skateboarding. |
| OLLIES | • ollies n. Plural of ollie. • OLLIE v. to perform a certain kind of jump into the air in skateboarding. |