| APOTROPOUS | • APOTROPOUS adj. anatropous with a ventral raphe. |
| OPPOSITION | • opposition n. The action of opposing or of being in conflict. • opposition n. An opposite or contrasting position. • opposition n. (Astronomy) The apparent relative position of two celestial bodies when one is at an angle of 180 degrees… |
| OPTOPHONES | • optophones n. Plural of optophone. • OPTOPHONE n. a device transforming light into sound. |
| PHOTOPHOBE | • PHOTOPHOBE n. a plant that shuns or avoids light. |
| PHOTOPHONE | • photophone n. (Historical) A device that transmitted sound on a beam of light. • photophone n. (Obsolete) A home phone with integral picture frame. • photophone n. (Dated) A stills-only cameraphone. Used to distinguish from video-capable camera cellphones and camera-less… |
| PHOTOPHONY | • photophony n. The art or practice of using the photophone. • PHOTOPHONY n. the art or practice of using the photophone. |
| PHOTOPHORE | • photophore n. (Biology) A light-emitting organ, found in some fish and other marine animals. • photophore n. (Medicine) A form of endoscope using an electric light. • PHOTOPHORE n. a luminiferous organ. |
| PHOTOSHOPS | • photoshops v. Third-person singular simple present indicative form of photoshop. • PHOTOSHOP v. to manipulate a digital image using editing software. |
| PHOTOTROPE | • PHOTOTROPE n. a substance exhibiting phototropism, movement directed by light. |
| PHOTOTROPH | • phototroph n. A photoautotroph. • PHOTOTROPH n. a plant which uses light to generate energy needed to absorb nutrients. |
| PHOTOTROPY | • phototropy n. Phototropism. • PHOTOTROPY n. change of colour due to wavelength of incident light. |
| PORNOTOPIA | • pornotopia n. A fantasy world in which everyone is ready and willing to indulge in all kinds of sexual activity. • PORNOTOPIA n. a perfect setting for the antics of pornography. |
| PROMPTBOOK | • promptbook n. An annotated copy of a script used by a prompter. • PROMPTBOOK n. a copy of a play for a prompter. |
| PROPORTION | • proportion n. (Countable) A quantity of something that is part of the whole amount or number. • proportion n. (Uncountable) Harmonious relation of parts to each other or to the whole. • proportion n. (Countable) Proper or equal share. |
| PROPROCTOR | • proproctor n. (UK) An assistant proctor in a university. • PROPROCTOR n. an assistant proctor. |
| PROTOTROPH | • prototroph n. (Biology) Any microorganism that can synthesize its nutrients from inorganic material. • PROTOTROPH n. a bacterium feeding only on inorganic matter. |