Placenta

pla-sen'ta, n. pi. -tie, -te. (Anat.) The soft, spongy disk which connects the mother with the fetus in the womb; afterbirth. (Bot.) The part of a plant or fruit to which the seeds are attached. [L., orig. a cake, Gr. plakous, a flat cake, fr. plax, a flat surface: see Plain.] — Placen'tal, a. Pert, to, or having, etc. — n. A mammal having, etc. Placid, etc. See under Placate. Placket. See under Placard. Plagal. pla'gal, a. (Mus.) Having the principal tones lying between the fifth of the kev and octave or twelfth, — said of certain melodies or tunes. [Gr. plar/ios, oblique, slanting.]