from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To make hard; harden: soil that had been indurated by extremes of climate.
  • transitive v. To inure, as to hardship or ridicule.
  • transitive v. To make callous or obdurate: "It is the curse of revolutionary calamities to indurate the heart” ( Helen Maria Williams).
  • intransitive v. To grow hard; harden.
  • intransitive v. To become firmly fixed or established.
  • adj. Hardened; obstinate; unfeeling.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Indurated, obstinate, unfeeling, callous.
  • v. to harden or to grow hard
  • v. to make callous or unfeeling
  • v. to inure; to strengthen; to make hardy or robust.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Hardened; not soft; indurated.
  • adj. Without sensibility; unfeeling; obdurate.
  • intransitive v. To grow hard; to harden, or become hard.
  • transitive v. To make hard
  • transitive v. To make unfeeling; to deprive of sensibility; to render obdurate.

from The Century Dictionary and Cyclopedia

  • To grow hard; harden; become hard: as, clay indurates by drying and by extreme heat.
  • To become fixed or habitual; pass into use; inure.
  • To make hard: as, extreme heat indurates clay.
  • To make hard in feeling; deprive of sensibility; render obdurate.
  • Hardened; unfeeling; indurated.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. cause to accept or become hardened to; habituate
  • v. become hard or harder
  • adj. emotionally hardened
  • v. become fixed or established
  • v. make hard or harder


from The American Heritage® Dictionary of the English Language, 4th Edition

Latin indūrāre, indūrāt- : in-, intensive pref.; see in-2 + dūrus, hard; see deru- in Indo-European roots.


  • Bertram Cornell, the indurate, cold-blooded Englishman, is struck by many arrows but remains upright and still as a statue as his comrades make their way to safety.

    “Why this longing for life? It is a game which no man wins.”

  • Usage: We see so much bad news every day that we risk becoming an indurate society, incapable of deep feeling until great tragedy.

    Word of the Week #11

  • He shall have all the good words that may be given, [2082] a proper man, and 'tis pity he hath no preferment, all good wishes, but inexorable, indurate as he is, he will not prefer him, though it be in his power, because he is indotatus, he hath no money.

    Anatomy of Melancholy

  • Its indurate was beginning to show the wear of feet and wheels through centuries.


  • If there be not in her a proud mind, a crafty wit, and an indurate heart against God and His truth, my judgement faileth me.

    Mary Queen Of Scotland And The Isles

  • They are so extremely short and indurate that it is difficult to imagine the function they perform; at first they are capable probably of absorbing from the air.

    Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries

  • Neuerthelesse, desirous to vanquishe his indurate affections, he continued abroade for a certaine time, during whiche space, vnable to quenche the fire, he led a more desolate and troublesome life, then he did before.

    The Palace of Pleasure, Volume 1

  • 'If there be not in her a proud mind, a crafty wit, and an indurate heart against God and His truth, my judgment faileth me.'

    John Knox

  • It has been properly observed, that there are preparations which so indurate the cuticle, as to render it insensible to the heat of either boiling oil or melted lead; and the fatal qualities of certain poisons may be destroyed, if the medium through which they are imbibed, as we suppose to. be the case here, is a strong alkali.

    Miracle Mongers and Their Methods

  • Growing indurate, turning to stone, yet burgeoning15

    Spoon River Anthology: Webster Ford.


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  • (adj): hardened; without feeling or sensibility.

    (v.t.): to make hard; to deprive of feeling or sensibility.

    (v.i.): to grow or become hard.

    His heart had grown cold, his feelings indurate. -- Victor Call

    December 31, 2008