| MORPHOTROPY | • MORPHOTROPY n. the effect on crystalline form of the addition or substitution of an element or radical. |
| PHOTOCOPIED | • photocopied v. Simple past tense and past participle of photocopy. • PHOTOCOPY v. to make a photocopy of. |
| PHOTOCOPIER | • photocopier n. A machine which reproduces documents by photographing the original over a glass plate and printing duplicates. • PHOTOCOPIER n. a machine for copying. |
| PHOTOCOPIES | • photocopies n. Plural of photocopy. • photocopies v. Third-person singular simple present indicative form of photocopy. • PHOTOCOPY v. to make a photocopy of. |
| PHOTOPERIOD | • photoperiod n. (Biology) The normal duration of natural daylight experienced by an organism; daylength. • PHOTOPERIOD n. the period during every 24 hours when an organism is exposed to daylight. |
| PHOTOPHOBES | • PHOTOPHOBE n. a plant that shuns or avoids light. |
| PHOTOPHOBIA | • photophobia n. (Medicine) Excessive sensitivity to light and the aversion to bright light; abnormal fear of light. • photophobia n. An aversion to or fear of being photographed, the dissemination of personal photographs, or viewing photographs. • PHOTOPHOBIA n. the morbid fear of light. |
| PHOTOPHOBIC | • photophobic adj. (Biology) That thrives at a relatively low light level. • photophobic adj. Of, relating to, or exhibiting photophobia. • PHOTOPHOBIC adj. having a fear of the light. |
| PHOTOPHONES | • photophones n. Plural of photophone. • PHOTOPHONE n. an apparatus for the production of sound by the action of rays of light. |
| PHOTOPHONIC | • photophonic adj. Of or pertaining to the photophone. • PHOTOPHONIC adj. relating to photophony. |
| PHOTOPHORES | • photophores n. Plural of photophore. • PHOTOPHORE n. a luminiferous organ. |
| PHOTOTROPES | • PHOTOTROPE n. a substance exhibiting phototropism, movement directed by light. |
| PHOTOTROPHS | • phototrophs n. Plural of phototroph. • PHOTOTROPH n. a plant which uses light to generate energy needed to absorb nutrients. |
| PHOTOTROPIC | • phototropic adj. Having a tendency to move in response to light. An animal or microbe that is positively phototropic… • PHOTOTROPIC adj. relating to phototropism, movement directed by light. |
| PROPHETHOOD | • prophethood n. State or condition of being a prophet. • PROPHETHOOD n. the state of being a prophet. |
| PROTOPHLOEM | • protophloem n. The form of phloem that is initially formed, composed of narrow, thin-walled cells. • PROTOPHLOEM n. the first-formed phloem that develops from procambium, usually associated with a region of rapid growth. |
| PROTOTROPHS | • prototrophs n. Plural of prototroph. • PROTOTROPH n. a bacterium feeding only on inorganic matter. |
| PROTOTROPHY | • prototrophy n. The condition of being a prototroph. • PROTOTROPHY n. the state of being prototrophic. |