| OCTOPODOUS | • octopodous adj. Having eight legs. • OCTOPODOUS adj. relating to an octopod, an octopus or other eight-armed creature. |
| ORTHOTROPOUS | • orthotropous adj. (Botany, of an ovule) Growing straight and having the micropyle at the apex. • ORTHOTROPOUS adj. growing straight, so that the micropyle is opposite the stalk. |
| ODONTOPHOROUS | • odontophorous adj. (Zoology) Having an odontophore. • ODONTOPHOROUS adj. of or like an odontophore, the rasping apparatus in molluscs. |
| OMMATOPHOROUS | • OMMATOPHOROUS adj. of or like ommatophore, an eyestalk, as in snails. |
| POLYCHOTOMOUS | • polychotomous adj. Divisible or separable into multiple groups or pieces. • POLYCHOTOMOUS adj. dividing or marked by division into many parts, branches, or classes. |
| OPISTHOCOELOUS | • opisthocoelous adj. Concave behind; applied especially to vertebrae in which the anterior end of the centrum is convex and… • OPISTHOCOELOUS adj. hollow or concave behind, as e.g. a vertebra is, also OPISTHOCOELIAN. |
| PHOTOAUTOTROPH | • photoautotroph n. (Biology) an organism, such as all green plants, that can synthesize its own food from inorganic material… • PHOTOAUTOTROPH n. an organism capable of synthesizing its own food from inorganic substances using light as an energy source. |
| PHOTOCONDUCTOR | • photoconductor n. A material, or a device, that exhibits or utilizes photoconductivity. • PHOTOCONDUCTOR n. a photoconductive substance. |
| CHROMATOPHOROUS | • CHROMATOPHOROUS adj. of or like a chromatophore, a pigment-bearing cell. |
| PHOTOAUTOTROPHS | • photoautotrophs n. Plural of photoautotroph. • PHOTOAUTOTROPH n. an organism capable of synthesizing its own food from inorganic substances using light as an energy source. |
| PHOTOCONDUCTION | • photoconduction n. A change (normally an increase) in the electrical conductivity of a material as a result of incident… • PHOTOCONDUCTION n. conduction of electricity resulting from the absorption of light. |
| PHOTOCONDUCTORS | • photoconductors n. Plural of photoconductor. • PHOTOCONDUCTOR n. a photoconductive substance. |
| PHOTOFLUOROGRAM | • photofluorogram n. (Photography) A photograph made by photofluorography. • PHOTOFLUOROGRAM n. a photograph of a fluoroscopic image. |
| PHOTOPRODUCTION | • photoproduction n. (Chemistry) The production of a molecular species (e.g. a radical or ion) by means of light. • PHOTOPRODUCTION n. the production of one or more particles by the action of an incident photon. |