/ Dictionary / Index A alpha iron: Meaning and Definition of Find definitions for: al'pha i"ron Pronunciation: [key] — Metall. Metall. the magnetic allotrope of iron, stable below 910°C and having a body-centered cubic space lattice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. alpha-interferon alpha-ketoglutaric acid Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language