POTAMOLOGY
Pot`a*mol"o*gy, n. Etym: [Gr. -logy.]
Defn: A scientific account or discussion of rivers; a treatise on rivers; potamography.
POTAMOSPONGIAE
Pot`a*mo*spon"gi*æ, n. pl. Etym: [NL., fr. Gr. (Zoöl.)
Defn: The fresh-water sponges. See Spongilla.
POTANCE
Po"tance, n. Etym: [F. potence. See Potence, Potency.] (Watch Making)
Defn: The stud in which the bearing for the lower pivot of the verge is made.
POTARGO
Po*tar"go, n. Etym: [Cf. Botargo.]
Defn: A kind of sauce or pickle. King.
POTASH Pot"ash`, n. Etym: [Pot + ash.] (Chem.) (a) The hydroxide of potassium hydrate, a hard white brittle substance, KOH, having strong caustic and alkaline properties; — hence called also caustic potash. (b) The impure potassium carbonate obtained by leaching wood ashes, either as a strong solution (lye), or as a white crystalline (pearlash).
POTASHES
Pot"ash`es, n. pl. (Chem.)