An Etymological Dictionary of Astronomy and Astrophysics

That which enters into a → compound or → mixture.

Etymology (EN): M.E., from L. ingredient- (nominative ingrediens) “that which enters into,” p.p. of ingredi “to go in, enter,” from → in- + gradi “to go, to walk,” → egress.

Etymology (PE): Darâné, literally “brought into,” from dar-, → in-, + ân present stem of ânidan “to bring, to lead,” → relate, + nuance suffix -é.