a. [f. L. crypta (see prec.) + -AL.] Of, pertaining to, or of the nature of a crypt.
1842. Dunglison, Med. Lex., s.v. Crypta, The use of the cryptal or follicular secretion, is to keep the parts supple and moist.
1860. All Year Round, No. 56. 139. He led me down to the second cryptal chamber.