adamantine Meaning, Definition & Usage

  1. adjective consisting of or having the hardness of adamant
  2. adjective satellite having the hardness of a diamond
  3. adjective satellite impervious to pleas, persuasion, requests, reason; she would have none of him"- W.Churchill
    intransigent; adamant; inexorable.
    • he is adamant in his refusal to change his mind
    • Cynthia was inexorable
    • an intransigent conservative opposed to every liberal tendency

WordNet

Ad`a*man"tine adjective
Etymology
L. adamantinus, Gr. .
Definitions
  1. Made of adamant, or having the qualities of adamant; incapable of being broken, dissolved, or penetrated; as, adamantine bonds or chains.
  2. (Min.) Like the diamond in hardness or luster.

Webster 1913