Pronunciation: (mu-tēr'ē-u-lē), [key]
1. to an important degree; considerably: Their endorsement didn't help materially.
2. with reference to matter or material things and conditions; physically.
3. Philos.with regard to matter or substance as distinguished from form.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.