/ Dictionary / Index L lineal: Meaning and Definition of Find definitions for: lin•e•al Pronunciation: (lin'ē-ul), [key] — adj. being in the direct line, as a descendant or ancestor, or in a direct line, as descent or succession. of or transmitted by lineal descent. linear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lineal (Thesaurus) lineage lineament Related Content Daily Word Quiz: overture Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language