| APOPHONY | • apophony n. (Phonetics) Alternation of sounds within a word that indicates grammatical information (often inflectional). • APOPHONY n. a change in root vowels of verb forms. |
| HYPOPNEA | • hypopnea n. (Pathology) A disorder which involves episodes of overly shallow breathing or an abnormally low respiratory rate. • HYPOPNEA n. abnormally shallow breathing, also HYPOPNOEA. |
| HYPOPYON | • hypopyon n. Collection of pus in the anterior chamber of the eye. • HYPOPYON n. an accumulation of pus in the eye. |
| PANSOPHY | • pansophy n. Complete and universal knowledge, or a system of such universal knowledge. • PANSOPHY n. (Greek) universal knowledge. |
| PAYPHONE | • payphone n. A public telephone that requires prepayment to operate, generally via the insertion of coins or a credit card. • pay␣phone n. Alternative form of payphone. • PAYPHONE n. a coin-operated public telephone, also PAYFONE. |
| POLYPHON | • polyphon n. A wooden-cased music box of a kind typically manufactured in Germany. • POLYPHON n. a character or vocal sign representing more than one sound, as read, which is pronounced red, also POLYPHONE. |
| POLYPINE | • polypine adj. Of or pertaining to a polyp. • POLYPINE adj. of or like a (colonial) polyp. |
| POLYPNEA | • polypnea n. (Medicine) deep and rapid breathing; panting. • POLYPNEA n. rapid breathing. |
| POPINJAY | • popinjay n. (Now archaic outside heraldry) A parrot. • popinjay n. (Obsolete) A decorative image of a parrot on a tapestry, cloth etc. • popinjay n. (Dated) A vain, gaudy person; someone who is shallow or superficial. |
| PROPENYL | • propenyl n. (Chemistry) A radical of propene (propylene). • PROPENYL n. a hydrocarbon radical related to propene. |
| PROPYLON | • propylon n. (Architecture, historical) The porch, vestibule, or entrance of an edifice. • PROPYLON n. an entrance to a temple. |
| PROPYNES | • propynes n. Plural of propyne. • PROPYNE n. a gaseous methyl acetylene. |
| SYNTHPOP | • synthpop n. A style of pop music in which the synthesizer is the dominant musical instrument. • synth-pop n. Alternative form of synthpop. • SYNTHPOP n. popular music played with synthesizers. |