Pro-top´te-rus [Gr. protos, first; pteron, wing.]
Pro-to-zo´a [Gr. protos, first; zoon, animal.]
Pseu-do-he-red´i-ty [Gr. pseudes, false; Lat. heredita, heirship.]
Pseu-do-po´di-a [Gr. pseudes, false; pous, foot.]
Psy-cho-zo´ic [Gr. psyche, soul; zoe, life.]
Pter-i-doph´y-ta [Gr. pteris, fern; phyton, plant.]
Pter-o-sau´ri-a [Gr. pteron, wing; sauros, lizard.]
Pti-lo´pus cinc´tus.
Pu´pa, pl. pupæ [Lat. doll, girl, f. of pupus, boy.] The third stage of those insects that undergo a complete metamorphosis. Pupæ are often surrounded by protective envelopes called cocoons.
Quad-ru´la sym-met´ri-ca.