Perigenesis :: Perigenesis (n.) A theory which explains inheritance by the transmission of the type of growth force possessed by one generation to another.
Perigenetic :: Perigenetic (a.) Of or pertaining to perigenesis.
Perigeum :: Perigeum (n.) That point in the orbit of the moon which is nearest to the earth; -- opposed to apogee. It is sometimes, but rarely, used of the nearest points of other orbits, as of a comet, a planet, etc. Called also epigee, epigeum..
Perigone :: Perigone (n.) Any organ inclosing the essential organs of a flower; a perianth.
Perigone :: Perigone (n.) In mosses, the involucral bracts of a male flower..
Perigone :: Perigone (n.) A sac which surrounds the generative bodies in the gonophore of a hydroid.
Perigynium :: Perigynium (n.) Some unusual appendage about the pistil, as the bottle-shaped body in the sedges, and the bristles or scales in some other genera of the Sedge family, or Cyperaceae..
Perigynous :: Perigynous (a.) Having the ovary free, but the petals and stamens borne on the calyx; -- said of flower such as that of the cherry or peach..