Definition of: effloresce

(ef′lô·res′, -lō-) v.i. ·resced, ·rese·ing
1. Bot. To blossom, bloom, or flower.
2. Chem. a To become powdery, wholly or in part, and lose crystalline structure through loss of water of crystallization on exposure to the air. b To become covered with a crust of saline particles left by evaporation, as the ground. [<L efflorescere <ex- thoroughly + florescere bloom <flos, floris a flower]