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[noo-mer-i-kuh l, nyoo-] /nuˈmɛr ɪ kəl, nyu-/

of or relating to ; of the nature of a number.
indicating a number:
numerical symbols.
bearing or designated by a number.
expressed by numbers instead of letters:
numerical cryptography; numerical equations.
of or relating to one’s skill at working with numbers, solving mathematical problems, etc.:
tests for rating numerical aptitude.
Mathematics. (def 12).
of, relating to, or denoting a number or numbers
measured or expressed in numbers: numerical value


1620s, from Latin numerus “a number” (see number (n.)) + suffix -ical. Perhaps by influence of French numérique “of a number or numbers.” Related: Numerically.


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  • Numerical-aperture

    noun, Microscopy. 1. a measure of the resolving power of a microscope, equal to the index of refraction of the medium in which the object is placed multiplied by the sine of the angle made with the axis by the most oblique ray entering the instrument, the resolving power increasing as the product increases. Abbreviation: […]

  • Numerical-control

    noun, Computers. 1. control of a machine tool, or other device used in a manufacturing process, by a computer, other control circuitry, or recorded digital commands. noun 1. (engineering) a form of computer control applied to machine tools, by which an operation is directed from numerical data stored on tape or punched on cards

  • Numerical identity

    noun 1. (logic) the relation that holds between two relata when they are the selfsame entity, that is, when the terms designating them have the same reference Compare qualitative identity See also Leibnitz’s law

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