/ Dictionary / Index N numerical control: Meaning and Definition of Find definitions for: numer'ical control' Pronunciation: [key] — Computers. Computers. control of a machine tool, or other device used in a manufacturing process, by a computer, other control circuitry, or recorded digital commands. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. numerical aperture numerical taxonomy Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language