noun, plural char·tae [kahr-tee] /ˈkɑr ti/. Pharmacology.
  1. a strip of paper that is impregnated with a medicinal substance, for external application.
  2. Also called chartula, powder paper. a paper folded so as to form a packet for a powdered medicament.

Origin of charta

before 1000; Old English, for earlier sense of “letter, document” < Medieval Latin; < New Latin, Latin: sheet of paper, document < Greek chártēs papyrus leaf, sheet of paper, literally, something to make marks on; see character Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for charta

Historical Examples of charta