† operametern.

Origin: A borrowing from Latin, combined with an English element. Etymons: Latin opera , oper- , opus , -meter comb. form².

Etymology: < classical Latin opera works, plural of oper-, opus (see opus n.) + -meter comb. form². N.E.D. (1903) gives the pronunciation as (ǫpĕræ·mĭtəɹ) /ɒpəˈræmɪtə(r)/.

Mechanics. Obsolete.

An apparatus for registering the number of revolutions, strokes, or cycles of a mechanism, esp. in a manufacturing process.

ΘΚΠ

the world > relative properties > number > mathematical instruments > [noun] > arithmetical instrument

mesograph1579

mesolabe1579

quipu1581

rods1618

Napier's bones1647

Napier's rods1678

reckoner1757

counter1803

adding machine1822

operameter1830

virgulaa1831

adder1856

computer1869

arithmometer1876

perforation gauge1882

Cuisenaire rod1954

number line1964

number cruncher1966

cruncher1971

1830 Ann. Reg. 1829 Patents 548/2 S. Walker, Beeston, Leeds, for an improved apparatus which he denominates ‘an operameter’.

1839 A. Ure Dict. Arts 910 In dressing cloths it is often found that too little or too much work has been expended on them... By the use of the operameter, that evil will be avoided.

a1877 E. H. Knight Pract. Dict. Mech. II. 1562/1 Operameters are used to count the revolution of a shaft, axle, or wheel, the strokes of a piston, the copies from a printing-press, [etc.].

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online December 2021).

单词	operameter
释义	† operametern. Origin: A borrowing from Latin, combined with an English element. Etymons: Latin opera , oper- , opus , -meter comb. form². Etymology: < classical Latin opera works, plural of oper-, opus (see opus n.) + -meter comb. form². N.E.D. (1903) gives the pronunciation as (ǫpĕræ·mĭtəɹ) /ɒpəˈræmɪtə(r)/. Mechanics. Obsolete. An apparatus for registering the number of revolutions, strokes, or cycles of a mechanism, esp. in a manufacturing process. ΘΚΠ the world > relative properties > number > mathematical instruments > [noun] > arithmetical instrument mesograph1579 mesolabe1579 quipu1581 rods1618 Napier's bones1647 Napier's rods1678 reckoner1757 counter1803 adding machine1822 operameter1830 virgulaa1831 adder1856 computer1869 arithmometer1876 perforation gauge1882 Cuisenaire rod1954 number line1964 number cruncher1966 cruncher1971 1830 Ann. Reg. 1829 Patents 548/2 S. Walker, Beeston, Leeds, for an improved apparatus which he denominates ‘an operameter’. 1839 A. Ure Dict. Arts 910 In dressing cloths it is often found that too little or too much work has been expended on them... By the use of the operameter, that evil will be avoided. a1877 E. H. Knight Pract. Dict. Mech. II. 1562/1 Operameters are used to count the revolution of a shaft, axle, or wheel, the strokes of a piston, the copies from a printing-press, [etc.]. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online December 2021). < n.1830
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