Webster’s Revised Unabridged Dictionary · 1913
Efflorescent
Ef′flo·res′cent (·sent), a. [F. efflorescent, L. efflorescens, -entis, blooming, p. pr. of efflorescere. See Effloresce, v. i.] 1. That effloresces, or is liable to effloresce on exposure; as, an efflorescent salt.
2. Covered with an efflorescence.