| DETECTOPHONE | • DETECTOPHONE n. a secret telephone for eavesdropping. |
| EPANORTHOTIC | • EPANORTHOTIC adj. relating to epanorthosis, the retracting of a statement in order to correct or intensify. |
| LUTEOTROPHIN | • luteotrophin n. Alternative form of luteotropin. • LUTEOTROPHIN n. another name for the hormone prolactin, also LUTEOTROPIN. |
| NOSTOPATHIES | • NOSTOPATHY n. the morbid fear of returning to familiar places. |
| ORNITHOPTERS | • ornithopters n. Plural of ornithopter. • ORNITHOPTER n. a birdlike archaic flying machine. |
| ORTHOPTERANS | • orthopterans n. Plural of orthopteran. • ORTHOPTERAN n. any member of the Orthoptera, an order of mandibulate insects, also ORTHOPTERON. |
| PHOTOCURRENT | • photocurrent n. Any electric current that flows as a result of photoconductivity or the photovoltaic effect. • PHOTOCURRENT n. a stream of electrons produced by photoelectric or photovoltaic effects. |
| PHOTOGELATIN | • photogelatin n. Gelatin, coated on a glass plate, that carries an image to be printed by the collotype process. • PHOTOGELATIN adj. as in photogelatin process, another name for collotype. |
| PHOTOKINETIC | • photokinetic adj. Of or pertaining to photokinesis. • PHOTOKINETIC adj. relating to photokinesis. |
| PHOTOMONTAGE | • photomontage n. (Photography) A composite image combining two or more photographs. • photomontage n. (Photography) The art of constructing such images. • PHOTOMONTAGE n. montage using photographic images. |
| PHOTONASTIES | • PHOTONASTY n. the adoption of a certain position due to the effect of light on growth. |
| PHOTONEUTRON | • photoneutron n. (Physics) Any neutron produced by a photonuclear reaction. • PHOTONEUTRON n. a neutron emitted from a nucleus as a result of photodisintegration. |
| PHOTOSETTING | • photosetting v. Present participle of photoset. • PHOTOSETTING n. composing (matter) by projecting film from which a printing plate is made. |
| PHOTOTONUSES | • PHOTOTONUS n. the sensitivity of a living organism to light. |
| PHYTOBENTHOS | • phytobenthos n. (Biology) benthic organisms that are plants or algae. • PHYTOBENTHOS n. plants living at the bottom of water collectively. |
| PROTOTHERIAN | • prototherian adj. Belonging or pertaining to the subclass Prototheria of monotremes. • prototherian n. Any of the egg-laying mammals of the subclass Prototheria; a monotreme. • PROTOTHERIAN adj. pertaining to a member of Prototheria, which comprises the order Monotremata and related fossil forms. |
| TAUTOPHONIES | • tautophonies n. Plural of tautophony. • TAUTOPHONY n. repetition of the same sound. |
| TENDONOPATHY | • tendonopathy n. Misspelling of tendinopathy. |
| THEATROPHONE | • theatrophone n. Alternative spelling of théâtrophone. • théâtrophone n. (Dated) An early telephone technology allowing subscribers to listen to live opera and theatre performances. • THEATROPHONE n. (historical) a telephone connecting callers to a theatre so they can listen to a live performance there. |
| THIOPENTONES | • THIOPENTONE n. an intravenous anaesthetic. |