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n. 1. Botany A state or time of flowering. 2. a. A gradual process of unfolding or developing. b. The point or time of greatest vigor; the culmination. See Synonyms at bloom1. 3. Chemistry a. A deposit that results from the process of efflorescing. Also called bloom1. b. The process of efflorescing. 4. Medicine Redness, a rash, or an eruption on the skin. ef′flo·rescent adj.  (click for a larger image) efflorescencesalt efflorescence on a brick surface |
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