/ Dictionary / Index B basal: Meaning and Definition of Find definitions for: ba•sal Pronunciation: (bā'sul, -zul), [key] — adj. of, at, or forming the base. forming a basis; fundamental; basic. indicating a standard low level of activity of an organism, as during total rest. of an amount required to maintain this level. serving to induce a preliminary or light anesthesia prior to total anesthetization. used in elementary instruction; fundamental: a basal reader. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: basal (Thesaurus) basad basal body Related Content Daily Word Quiz: transient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language