efflorescence
ef-luh-RES-unss
/ˌɛf.lɔːˈrɛs.əns/
A white crystalline deposit of mineral salts that forms on masonry surfaces as water evaporates.
Serves as a visual indicator of water movement inside masonry; while cosmetic itself, it signals moisture migration.
The story behind the word. Derived from Latin efflorescere (to bloom or blossom out). Early stone masons observed white powdery mineral salts growing across brick surfaces and thought it resembled delicate white flowers blooming on stone.
Word relationships
- salt bloom: A common descriptive synonym for mineral salt encrustations on masonry.
- salination: Salination refers to salt accumulation in soil or water bodies rather than surface crystalline crusts.
- dry clean surface: A masonry face entirely free of migrating soluble salt residues.
Commonly confused with
- mold: Efflorescence consists of crystalline mineral salts; mold is a living biological fungal structure.
Word family
- effloresce (verb): To form crystalline salt deposits as moisture evaporates.
- efflorescent (adjective): Covered with or subject to crystalline salt deposits.
Collocations
- white efflorescence
- efflorescence buildup
- efflorescence remover
- prevent efflorescence
Example sentences
- "Thick efflorescence along basement brick walls alerted the inspector to ongoing water infiltration behind the foundation." Building Pathology
- "Applying a silicone water repellent stopped soluble salts from migrating to the concrete face and causing efflorescence." Materials Science
Memory hook
EFFLORESCENCE is a FLOWERing of salt on walls. Efflorescence = powdery salt bloom.
When not to use
Do not confuse with organic surface growths like mold, algae, or lichen.
Fun facts
- A mild solution of household vinegar or citrus acid easily dissolves efflorescence without harming underlying bricks.
Explore more words
masonry, efface, moisture-wicking, hygroscopic, grime, salinity
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