Prehension: structures fitted for grasping or holding.
Pre-mandibular: situated in front of the mandible: applied to a temporary segment of the embryo: = intercalary segment.
Pre-media: Ephemeridae; an apparently distinct vein between radius and media (Comst.).
Premorse: as if bitten off: with a blunt or jagged termination.
Prensor: the genital lateral clasping organ of male Lepidoptera: see clasper.
Pre-ocular: see prae-ocular.
Pre-oral: in front of the mouth: the embryonic head segments before those bearing the mouth parts.
Prepuce: =praeputium; q.v.
Pre-pupal: that stage in the larva just preceding the change to pupa.
Pre-scutellar bristles: in Diptera, are in a transverse row in front of the scutellum.