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caustic

[kaw-stik] /ˈkɔ stɪk/
adjective
1.
capable of burning, corroding, or destroying living tissue.
2.
severely critical or sarcastic:
a caustic remark.
noun
3.
a caustic substance.
Origin
1350-1400
1350-1400; Middle English < Latin causticus < Greek kaustikós burning, caustic, equivalent to kaust(ós) burnt (verbal adjective of kaíein to burn) + -ikos -ic
Related forms
caustically, causticly, adverb
causticity
[kaw-stis-i-tee] /kɔˈstɪs ɪ ti/ (Show IPA),
causticness, noun
noncaustic, adjective
noncaustically, adverb
overcaustic, adjective
overcaustically, adverb
overcausticity, noun
uncaustic, adjective
uncaustically, adverb
Synonyms
2. biting, mordant, bitter, scathing, acid.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for causticness

caustic

/ˈkɔːstɪk/
adjective
1.
capable of burning or corroding by chemical action: caustic soda
2.
sarcastic; cutting: a caustic reply
3.
of, relating to, or denoting light that is reflected or refracted by a curved surface
noun
4.
Also called caustic surface. a surface that envelops the light rays reflected or refracted by a curved surface
5.
Also called caustic curve. a curve formed by the intersection of a caustic surface with a plane
6.
(chem) a caustic substance, esp an alkali
Derived Forms
caustical, adjective
caustically, adverb
causticity (kɔːˈstɪsɪtɪ), causticness, noun
Word Origin
C14: from Latin causticus, from Greek kaustikos, from kaiein to burn
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for causticness

caustic

adj.

c.1400, "burning, corrosive," from Latin causticus "burning, caustic," from Greek kaustikos "capable of burning; corrosive," from kaustos "combustible; burnt," verbal adjective from kaiein, the Greek word for "to burn" (transitive and intransitive) in all periods, of uncertain origin with no certain cognates outside Greek. Figurative sense of "sarcastic" is attested from 1771. As a noun, early 15c., from the adjective.

Online Etymology Dictionary, © 2010 Douglas Harper
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causticness in Medicine

caustic caus·tic (kô'stĭk)
n.

  1. A hydroxide of a light metal.

  2. A caustic material or substance.

adj.
  1. Capable of burning, corroding, dissolving, or eating away by chemical action.

  2. Of or relating to light emitted from a point source and reflected or refracted from a curved surface.

  3. Causing a burning or stinging sensation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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