PICROLITE
Pic"ro*lite, n. Etym: [Gr. -lite.: cf. F. picrolithe.] (Min.)
Defn: A fibrous variety of serpentine.
PICROMEL
Pic"ro*mel, n. Etym: [Gr. picromel.] (Old Chem.)
Defn: A colorless viscous substance having a bitter-sweet taste.
Note: It was formerly supposed to be the essential principle of the bile, but is now known to be a mixture, principally of salts of glycocholic and taurocholic acids.
PICROTOXIN
Pic`ro*tox"in, n. Etym: [Gr. toxic + -in.] (Chem.)
Defn: A bitter white crystalline substance found in the cocculus indicus. It is a peculiar poisonous neurotic and intoxicant, and consists of a mixture of several neutral substances.
PICRYL
Pi"cryl, n. Etym: [Picric + -yl.] (Chem.)
Defn: The hypothetical radical of picric acid, analogous to phenyl.
PICTISH
Pict"ish, a.