/ Dictionary / Index A alumroot: Meaning and Definition of Find definitions for: al•um•root Pronunciation: (al'um-rt", -root"), [key] — n. any of several North American plants belonging to the genus Heuchera, of the saxifrage family, esp. H. americana, having mottled foliage and greenish-white flowers. the root of any of these plants, used as an astringent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: alumroot (Thesaurus) Alum Rock Alundum Related Content Daily Word Quiz: taut Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language