n. [ Gr. "iero`s sacred + -gram.] A form of sacred or hieratic writing. [1913 Webster]

a. [ Cf. F. hiérogrammatique. ] Written in, or pertaining to, hierograms; expressive of sacred writing. Bp. Warburton. [ 1913 Webster ]

n. [ Cf. F. hiérogrammatiste. ] A writer of hierograms; also, one skilled in hieroglyphics. Greenhill.