Answer: effloresced

AnswerCrossword Clue
efflorescedReach an optimum stage of development; blossom
effloresced(of a substance) Lose moisture and turn to a fine powder upon exposure to air
effloresced(of salts) Come to the surface of brickwork, rock, or other material and crystallize there
effloresced(of a surface) Become covered with salt particles
efflorescedEFFLORESCE, to flower; burgeon; (chem.) to become powder when exposed to air