| COMPOSITION | • composition n. The act of putting together; assembly. • composition n. A mixture or compound; the result of composing. • composition n. The proportion of different parts to make a whole. |
| IONOTROPIES | • IONOTROPY n. the reversible interconversion of a pair of organic isomers. |
| OLIGOPOLIES | • oligopolies n. Plural of oligopoly. • OLIGOPOLY n. a market situation in which a few producers control the demand from a large number of buyers. |
| OLIGOPOLIST | • oligopolist n. A member of an oligopoly; one of a small number of sellers with undue influence over a market. |
| OPHIOLOGIES | • OPHIOLOGY n. the study of snakes. |
| OPHIOLOGIST | • ophiologist n. One who studies ophiology. • OPHIOLOGIST n. a student of ophiology. |
| OPINIONATOR | • opinionator n. (Obsolete) An opinionated person; one given to conjecture. • OPINIONATOR n. one who holds or gives an opinion. |
| OPPOSITIONS | • oppositions n. Plural of opposition. • OPPOSITION n. the act of opposing. |
| OVIPOSITION | • oviposition n. The process of laying eggs. • OVIPOSITION n. the act of ovipositing. |
| OVIPOSITORS | • ovipositors n. Plural of ovipositor - a tubular egg-laying organ. • OVIPOSITOR n. the organ with which many insects and some other animals deposit their eggs. |
| PHOTOIONISE | • PHOTOIONISE v. to ionize by electromagnetic radiation, also PHOTOIONIZE. |
| PHOTOIONIZE | • photoionize v. (Physics) To cause, or to undergo photoionization. • PHOTOIONIZE v. to ionize by electromagnetic radiation, also PHOTOIONISE. |
| PROPOSITION | • proposition n. (Uncountable) The act of offering (an idea) for consideration. • proposition n. (Countable) An idea or a plan offered. • proposition n. (Countable, business settings) The terms of a transaction offered. |