| GONOPHORES | • gonophores n. Plural of gonophore. • GONOPHORE n. in certain flowers, an elongate structure bearing the stamens and pistil. |
| IONOPHORES | • ionophores n. Plural of ionophore. • IONOPHORE n. a chemical compound able to combine with an ion and enable it to pass through a cell membrane. |
| MONOPTEROI | • monopteroi n. Plural of monopteros. • MONOPTEROS n. a building with single ring of columns supporting a roof. |
| MONOPTERON | • monopteron n. (Architecture) A circular temple consisting of a roof supported on columns, without a cella. • MONOPTERON n. a circular temple with one ring of columns. |
| MONOPTEROS | • monopteros n. (Architecture) A classical temple made up of one circle of columns supporting a roof. • MONOPTEROS n. a building with single ring of columns supporting a roof. |
| ORPHEOREON | • orpheoreon n. Alternative form of orpharion. • ORPHEOREON n. a large lute-like stringed instrument with six to nine metal strings, also ORPHARION. |
| ORTHOPNOEA | • orthopnoea n. Shortness of breath when lying flat, causing the person to have to sleep propped up in bed or sitting in a chair. • orthopnœa n. Obsolete spelling of orthopnoea. • ORTHOPNOEA n. the ability to breathe in an upright position only. |
| PERSONHOOD | • personhood n. The state or period of being a person. • personhood n. The status of being considered as a person. • PERSONHOOD n. being a person. |
| PHONOPHORE | • phonophore n. The phonetic component of a character in Chinese and related writing systems. • phonophore n. A type of telegraph. • PHONOPHORE n. a sound-conducting apparatus, of various kinds; a device for telephoning and telegraphing simultaneously by the same wire. |
| PHONOPORES | • phonopores n. Plural of phonopore. • PHONOPORE n. a kind of sound-conducting apparatus. |
| PONEROLOGY | • ponerology n. The study of evil. • PONEROLOGY n. the theological doctrine of wickedness or evil. |
| PONTOONERS | • pontooners n. Plural of pontooner. • PONTOONER n. a builder of pontoon bridges, also PONTONEER, PONTONIER, PONTONNIER. |
| POULTROONE | • POULTROONE n. (Shakespeare) a poltroon, also POLTROON. |
| PROOEMIONS | • PROOEMION n. a preface, also PROEM, PROOEMIUM. |
| PROPODEONS | • PROPODEON n. in some Hymenoptera, the first abdominal segment, also PROPODEUM. |
| PROVOLONES | • provolones n. Plural of provolone. • PROVOLONE n. (Italian) a firm pliant smoked cheese of Italian origin. |