| pale globe | The representation of the phylogenetically oldest part of the corpus striatum called the paleostriatum. It forms the smaller, more medial part of the lentiform nucleus. (12 Dec 1998) |
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| pale hypertension | Hypertension with pallor of the skin, a severe form with pronounced constriction of peripheral vessels. (05 Mar 2000) |
| pale infarct | An infarct in which little or no bleeding into tissue spaces occurs when the blood supply is obstructed. Synonym: pale infarct, white infarct. (05 Mar 2000) |
| pale thrombus | A thrombus of opaque dull white colour composed essentially of blood platelets. Synonym: pale thrombus. (05 Mar 2000) |
| palea | <botany> In a grass floret, the upper one of the two bracts enclosing a flower. (09 Oct 1997) |
| paleaceous | <botany> Chaffy; resembling or consisting of paleae, or chaff; furnished with chaff; as, a paleaceous receptacle. Origin: L. Palea chaff. Source: Websters Dictionary (01 Mar 1998) |
| paleechinoidea | <zoology> An extinct order of sea urchins found in the Paleozoic rocks. They had more than twenty vertical rows of plates. Synonym: Palaeechini. Alternative forms: Palaeechinoidea. Origin: NL. See Paleo-, and Echinoidea. Source: Websters Dictionary (01 Mar 1998) |
| paleencephalon | L. Edinger's term for the metameric nervous system. Excludes cerebral cortex. Origin: paleo-+ G. Enkephalos, brain (05 Mar 2000) |
| paleichthyes | <zoology> A comprehensive division of fishes which includes the elasmobranchs and ganoids. Alternative forms: Palaeichthyes. Origin: NL. See Paleo-, and Ichthyology. Source: Websters Dictionary (01 Mar 1998) |
| paleness | The quality or condition of being pale; want of freshness or ruddiness; a sickly whiteness; lack of colour or luster; wanness. "The blood the virgin's cheek forsook; A livid paleness spreads o'er all her look." (Pope) Source: Websters Dictionary (01 Mar 1998) |
| palenque | <ethnology> A collective name for the Indians of Nicaragua and Honduras. Source: Websters Dictionary (01 Mar 1998) |
| paleo- | <prefix> A combining form meaning old, ancient; as, palearctic, paleontology, paleothere, paleography. Alternative forms: palaeo-. Origin: Gr, adj. (29 Oct 1998) |
| paleobotanist | One versed in paleobotany. Source: Websters Dictionary (01 Mar 1998) |
| paleobotany | That branch of paleontology which treats of fossil plants. Origin: Paleo- + botany. Source: Websters Dictionary (01 Mar 1998) |
| paleocarida | <zoology> Same as Merostomata. Alternative forms: Palaeocarida. Origin: NL, fr. Gr. Ancient +, a kind of crustacean. Source: Websters Dictionary (01 Mar 1998) |