/ Dictionary / Index A aneurin: Meaning and Definition of Find definitions for: an•eu•rin Pronunciation: (an'yu-rin), [key] — n. Biochem. thiamine. A•neu•rin Pronunciation: (u-nī'rin), [key] — n. a male given name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aneurin (Thesaurus) aneuria aneurysm Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language