| Hydrogalvanic | a. [ Hydro-, 1 + galvanic. ] Pertaining to, produced by, or consisting of, electricity evolved by the action or use of fluids; as, hydrogalvanic currents. [ R. ] [ 1913 Webster ] |
| Petrogale | n. [ NL., fr. Gr. pe`tra a rock + galh^ a weasel. ] (Zool.) Any Australian kangaroo of the genus Petrogale, as the rock wallaby (Petrogale penicillata). [ 1913 Webster ] |
| Pyrogallate | n. (Chem.) A salt of pyrogallic acid; an ether of pyrogallol. [ 1913 Webster ] |
| Pyrogallic | a. [ Pyro- + gallic. ] (Chem.) Pertaining to, derived from, or designating, an acid called pyrogallol. See Pyrogallol. [ 1913 Webster ] |
| Pyrogallol | n. [ Pyrogallic + -ol. ] (Chem.) A phenol metameric with phloroglucin, obtained by the distillation of gallic acid as a poisonous white crystalline substance having acid properties, and hence called also pyrogallic acid. It is a strong reducer, and is used as a developer in photography and in the production of certain dyes. [ 1913 Webster ] |
