1. incrustant - Noun
2. incrustant - Adjective
incrustant (comparative more incrustant, superlative most incrustant)
Tending to leave an incrustation on a boiler or other container when the containing water evaporates.
incrustant (plural incrustants)
Any substance that is dissolved in water which forms an incrustation when the water evaporates.