incrustant

English

Etymology

incrust +‎ -ant

Adjective

incrustant (comparative more incrustant, superlative most incrustant)

1. Tending to leave an incrustation on a boiler or other container when the containing water evaporates.
   • 1915, Ohio's Health - Volume 5, page 721:

     It is the practice at the Columbus plant to leave between 25 and 40 parts per million incrustant hardness in the water.

   • 1972, James Woodell Miller, John G. VanDerwalker, Richard A. Waller, Scientists-in-the-sea, page WF-212:

     For the sessile fauna it was found that the visible first settlers were present after one week and were the incrustant forms of one species of foraminifera and one species of a red calcareous algae.

   • 1972, Proceedings - Water Quality Conference, page 76:

     Split-lime softened water after blending is usually incrustant and difficult to filter unless fully recarbonated or acid treated.

Noun

incrustant (plural incrustants)

1. Any substance that is dissolved in water which forms an incrustation when the water evaporates.
   • 1905, The Journal of Infectious Diseases:

     The total incrustants in the water, expressed in terms of calcium carbonate, are clearly the sum of their component bases, calcium and magnesium, expressed in terms of calcium carbonate.

   • 1909, Water-supply Paper, page 188:

     Aluminum also is an incrustant present in most waters in quantities so small that it is not necessary to consider it; but when too much aluminum sulphate, a substance frequently used as a coagulant in filtering water, is added in the process of filtering, the excess passes through the filter and may cause trouble in the boiler, where it hydrolyzes, forming free sulphuric acid.

   • 1986, Fletcher G. Driscoll, Groundwater and Wells, page 644:

     Solid particles of incrustant can be removed along with any fine sediments that may have entered the zone immediately around the screen after the well was placed in service.

Catalan

Verb

incrustant

1. gerund of incrustar

French

Participle

incrustant

1. present participle of incruster

Further reading

• “incrustant”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

Latin

Verb

incrū̆stant

1. third-person plural present active indicative of incrū̆stō