| 释义 |
numerator|ˈnjuːməreɪtə(r)|
[ad. late L. numerātor, agent-n. f. numerāre to number. So F. numérateur (1515), It. numeratore, Sp. -ador.]
1. Arith.
†a. The word(s) or figure(s) by which the number of things or persons in question is denoted. Obs.
1542Recorde Gr. Artes C j b, Scholar. What shall I call .CCiii. ioined before the myllions? Master. That is called the numeratour or valewer. 1674S. Jeake Arith. (1696) 15 Thirty Men, here Men is the Contract Denominator, and Thirty the Numerator, or Valuer.
b. The number written above the line in a vulgar fraction, which shows how many of the specified parts of a unit are taken.
1575Recorde's Gr. Artes ii. X ij b, Those two numbers whiche expresse a fraction, haue seuerall names. The ouermost which is aboue the line, is called the Numerator. 1594Blundevil Exerc. i. vii. (1636) 20 Of how many parts doth a Fraction consist? Of two, that is the Numerator, and the Denominator. 1655Bramhall Agst. Hobbes iii. Wks. 1844 IV. 385 Their rules of algebra and helcataim, their integers, and numerators. 1674S. Jeake Arith. (1696) 41 As in 3/5 the Numerator is 3. 1706W. Jones Syn. Palmar. Matheseos 84 To multiply the Numerator is to multiply the Fraction. 1797Encycl. Brit. (ed. 3) II. 297/2 The division is completed by a vulgar fraction, whose numerator is the remainder. 1838De Morgan Ess. Probab. 40 The process for finding the greatest common measure of the numerator and denominator. 1864Bowen Logic xii. 406 The resulting fractions fall into a series, any one of which has for its numerator the sum of the two preceding numerators.
fig.1763tr. Rousseau's Emilius I. 7 Civilized man is only a relative unit, the numerator of a fraction, that depends on its denominator. 1831,1893[see denominator].
2. One who or that which numbers.
1675G. R. tr. Le Grand's Man without Passion 202 It becomes the numerator of expected Treasures, but cares not to cast up what it hath in possession. 1739Tonkin Carew's Cornwall (1811) 45 note, There is..a Numerator, whose business it is to set down the number of blocks coined every coinage. 1902Bible Student Oct. 216 Here numerators are set apart to superintend the numeration in the different tribes. |