GC: adj

S: http://www.mountainroseherbs.com/seeds/seeds.php (last access: 25 April 2013)

N: late 14c., from Old French medicinal and directly from Latin medicinalis “pertaining to medicine,” from medicina (see medicine). Related: Medicinally.

S: OED – http://www.etymonline.com/index.php?allowed_in_frame=0&search=medicinal&searchmode=none (last access: 4 September 2014)

SYN:
S:

CR: drug