Defn: Adapted to seize or grasp; prehensile.
PREHISTORIC
Pre`his*tor"ic, a.
Defn: Of or pertaining to a period before written history begins; as, the prehistoric ages; prehistoric man.
PREHNITE Prehn"ite, n. Etym: [So called from the German Colonel Prehn, who first found it.] (Min.)
Defn: A pale green mineral occurring in crystalline aggregates having a botryoidal or mammillary structure, and rarely in distinct crystals. It is a hydrous silicate of alumina and lime.
PREHNITIC
Prehn*it"ic, a. (Chem.)
Defn: Pertaining to, or designating, a tetrabasic acid of benzene obtained as a white crystalline substance; — probably so called from the resemblance of the wartlike crystals to the mammillæ on the surface of prehnite.
PREIGNITION
Pre`ig*ni"tion, n. (Engin.)
Defn: Ignition in an internal-combustion engine while the inlet valve is open or before compression is completed.
PREINDESIGNATE
Pre`in*des"ig*nate, a. (Logic.)