[ad-uh-man-teen, -tin, -tahyn]
- utterly unyielding or firm in attitude or opinion.
- too hard to cut, break, or pierce.
- like a diamond in luster.
Origin of adamantine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for adamantine
He yielded not; adamantine to the seductive lure, he picked up his heels and ran.The Black Bag
Louis Joseph Vance
And what a triumph for a thief to capture an adamantine heart!Penny of Top Hill Trail
Belle Kanaris Maniates
Its strength we feel, its adamantine fidelity to the House of Ulysses.Homer's Odyssey
Denton J. Snider
To polish diamonds they make use of the powder of adamantine spar, or the corundum stone.
"Much better for him to sleep than to say good-by," said this adamantine woman.Dodo's Daughter
E. F. Benson
- very hard; unbreakable or unyielding
- having the lustre of a diamond
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
Word Origin and History for adamantine
c.1200, from Latin adamantinus "hard as steel, inflexible," from Greek adamantinos, from adamas (see adamant (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper