Defn: Any insect of the genus Perla, or family Perlidæ. See Stone fly, under Stone.
PERLITE
Per"lite, n. (Min.)
Defn: Same as Pearlite.
PERLITIC
Per*lit"ic, a. (Min.)
Defn: Relating to or resembling perlite, or pearlstone; as, the perlitic structure of certain rocks. See Pearlite.
PERLOUS
Per"lous, a.
Defn: Perilous. [Obs.] Spenser.
PERLUSTRATION Per`lus*tra"tion, n. Etym: [L. perlustrare to wander all through, to survey. See 3d Luster.]
Defn: The act of viewing all over. [Archaic] Howell.
PERMANABLE
Per"ma*na*ble, a.