Par-a-me´ci-um [Gr. paramekes, of longish shape.]
Par-then-o-gen´e-sis [Gr. parthenos, virgin; genesis, origin.] Production of a new individual from a virgin female without intervention of a male; reproduction by means of unfertilized eggs.
Per-en-ni-bran-chi-a´ta [Lat. perennis, perpetual; branchia, gills.]
Per-en-ni-bran´chi-ates [Vid. Perennibranchiata.]
Ped´al [Lat. pes, foot.]
Per´mi-an [Perm, Russia.]
Phan´er-o-gams [Gr. phaneros, visible; gamos, marriage.] Flowering plants.
Phos-phor-es´cence.
Phryn-o-ceph´a-lus mys-ta´ce-us.
Phy-log´e-ny [Gr. phylon, tribe; genesis, origin.] The history of the evolution of a species or group; distinguished from ontogeny.