| HYPERPLANES | • hyperplanes n. Plural of hyperplane. • HYPERPLANE n. a figure in hyperspace corresponding to a plane in ordinary space. |
| HYPERPLASIA | • hyperplasia n. (Medicine) An increase in the size of a tissue or organ due to increased number of cells. • HYPERPLASIA n. an abnormal or unusual increase in the elements composing a part, such as cells composing a tissue. |
| HYPERPNOEAS | • HYPERPNOEA n. abnormally fast breathing, also HYPERPNEA. |
| HYPERSPACES | • hyperspaces n. Plural of hyperspace. • HYPERSPACE n. an imagined space having more than three dimensions. |
| HYPOPLASTRA | • hypoplastra n. Plural of hypoplastron. • HYPOPLASTRON n. the plate behind the hyoplastron in a turtle's plastron. |
| HYPSOGRAPHY | • hypsography n. (Sciences) The data present in contour lines; measurement of altitude or depth versus area. • HYPSOGRAPHY n. the branch of geography dealing with the measurement and mapping of heights above sea level. |
| PARAPHYSATE | • paraphysate adj. (Botany) Having paraphyses. • PARAPHYSATE adj. relating to paraphysis, a sterile filament or hair borne among the sporangia. |
| PARAPSYCHIC | • parapsychic adj. Parapsychological. • parapsychic n. A person with a paranormal psychic ability, such as telepathy or telekinesis. • PARAPSYCHIC adj. related to parapsychism, also PARAPSYCHICAL. |
| PROPHYLAXES | • prophylaxes n. Plural of prophylaxis. • PROPHYLAXIS n. preventive treatment against diseases, etc. |
| PROPHYLAXIS | • prophylaxis n. (Medicine) Prevention of, or protective treatment for, disease. • prophylaxis n. (Chess) A move or strategy that frustrates an opponent’s plan or tactic. • PROPHYLAXIS n. preventive treatment against diseases, etc. |
| PSALIGRAPHY | • PSALIGRAPHY n. the art of paper-cutting to make pictures. |
| PSYCHOGRAPH | • psychograph n. One of various graphical representations of a cognitive or psychological profile. • psychograph n. (Spiritualism) A photographic image having a supposed supernatural or spiritual origin. • psychograph n. (Spiritualism) Any of various devices used for automatic writing. |
| PYROPHOBIAS | • PYROPHOBIA n. fear of fire. |
| SAPROPHYTES | • saprophytes n. Plural of saprophyte. • SAPROPHYTE n. a fungus or bacterium that feeds upon dead and decaying organic matter. |
| SAPROPHYTIC | • saprophytic adj. Relating to saprophytes. • SAPROPHYTIC adj. relating to a saprophyte. |
| SPERMAPHYTE | • spermaphyte n. (Botany) Alternative form of spermatophyte. • SPERMAPHYTE n. any member of the Spermatophyta, seed-bearing plants, also SPERMOPHYTE. |
| SPIROGRAPHY | • spirography n. (Medicine) The measurement of breathing movements. • SPIROGRAPHY n. the recording of breathing movements. |
| TRYPTOPHANS | • tryptophans n. Plural of tryptophan. • TRYPTOPHAN n. an essential amino acid, also TRYPTOPHANE. |