The Collaborative International Dictionary
Pharmacognosis
Pharmacognosis \Phar`ma*cog*no"sis\, n. [Gr. fa`rmakon a drug + gnw^sis a knowing.] That branch of pharmacology which treats of unprepared medicines or simples; -- usually called pharmacognosy, and also pharmacography, and pharmacomathy.
Wiktionary
pharmacognosis
n. The branch of pharmacology that deals with unprepared medicines or simples.