efflorescing

Verb

effloresce (third-person singular simple present effloresces, present participle efflorescing, simple past and past participle effloresced)

1. (intransitive, obsolete except figuratively) To burst into bloom; to flower.
   • The genus isis, or coral, in the order of zoophytes, or composite animals, efflorescing like vegetables, is an animal in the form of a plant, with a stony stem, jointed, and the joints longitudinally channelled, united by spongy or horny junctures, covered by a soft porous cellular flesh or bark...1810, Joseph Guy, “Coral and Sponge Fishery”, in Guy’s Pocket Cyclopædia, or, Miscellany of Useful Knowledge. […], 5th augmented and improved edition, London: Printed [by C. Stower] for C. Cradock...
2. (figuratively, intransitive) Of something hidden: to come forth, to emerge; also, to reach full glory or power.
   • These [God's promises], implanted in the soul of David, effloresced in the Psalms to that luxuriance and fruitfulness which have made them the delight and nourishment of all succeeding ages of the church, [...]1829, “Conversation the Fifteenth. What Light is Thrown, upon that Part of God’s Purpose which is yet Unaccomplished, by the Historical Events of the Jewish Nation?”, in [Henry Drummond], editor...
3. (intransitive) Of a substance: to change from being crystalline to powdery by losing water of crystallization.
   • This is the very caſe with the Pyrites that conſiſt only of iron and ſulphur; yet ſome of them, as we ſaid before, do not effloreſce ſpontaneouſly and turn to Vitriol.1758, [Pierre-Joseph] Macquer, “Of the Vitriolic Acid”, in Andrew Reid, transl., Elements of the Theory and Practice of Chymistry. Translated from the French […] In Two Volumes, volume I, London...
4. (intransitive) Of a salt: to seep through some material (bricks, concrete, earth, rock, etc.) in a dissolved state, and then crystallize on a surface in a powdery form.
   • The ſalts which effloreſce from old walls, are nitre more or leſs pure, quadrangular nitre, mineral alkali in abundance, more or leſs pure, and mixed with calcareous earth; [...]1790 January, “Foreign Literary Intelligence”, in The Critical Review: Or, Annals of Literature (Series the Fifth), volume LXIX, London: Printed for A. Hamilton, […], →OCLC, page 101
5. (intransitive) Of the surface of a material: to become covered with a powdery salt (as described in sense 3.2).
   • In the country about Rome there is a very hard ſtone, which is hewn out of the quarry juſt like other ſtones for building: this ſtone yields a great deal of Alum. In order to extract it, the ſtones are calcined for twelve or fourteen hours; after which they are expoſed to the air in heaps, and...1758, [Pierre-Joseph] Macquer, “Of the Vitriolic Acid”, in Andrew Reid, transl., Elements of the Theory and Practice of Chymistry. Translated from the French […] In Two Volumes, volume I, London...