positionern.

Brit.

/pəˈzɪʃn̩ə/,

/pəˈzɪʃ(ə)nə/, U.S.

/pəˈzɪʃ(ə)nər/

Origin: Formed within English, by derivation. Etymons: position v., -er suffix¹.

Etymology: < position v. + -er suffix¹.

A person who or thing which positions something; spec. a device or machine for mechanically moving an object into position and keeping it there.

ΘΚΠ

the world > space > place > placing or fact of being placed in (a) position > [noun] > one who or that which

positioner1903

society > occupation and work > equipment > machine > types of machine generally > [noun] > other types

screw-machine?1746

self-driving1859

jig1875

pop-up1880

portable1900

positioner1903

slave1940

mobile unit1968

1903 U.S. Patent 718,587 2/1 A thread-positioner engages such part of the thread and pushes it down into the chamber into position to be engaged by a thread-catcher.

1934 Amer. Speech 9 229/1 Using a head positioner, a paste marker, and an exposure of four seconds, the vowels [u], [o], [a], [e] were radiographed for ten subjects.

1957 E. B. Jones Instrument Technol. III. ii. 133 The positioner also corrects for movements of the valve stem owing to unbalanced forces on the valve plug.

1972 Physics Bull. June 363/1 A micrometer stage is used to traverse the resistor under an rf probe which is held by a vertical positioner.

1999 Washington Post (Nexis) 16 Sept. a1 There are dozens of sleep positioners devised to keep infants from sleeping on their stomachs.

2011 New Scientist 22 Oct. 29 (caption) The hohlraum is placed precisely in the centre of the chamber by a positioner (bottom right) before the lasers are switched on.

This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).

单词	positioner
释义	positionern. Brit. /pəˈzɪʃn̩ə/, /pəˈzɪʃ(ə)nə/, U.S. /pəˈzɪʃ(ə)nər/ Origin: Formed within English, by derivation. Etymons: position v., -er suffix¹. Etymology: < position v. + -er suffix¹. A person who or thing which positions something; spec. a device or machine for mechanically moving an object into position and keeping it there. ΘΚΠ the world > space > place > placing or fact of being placed in (a) position > [noun] > one who or that which positioner1903 society > occupation and work > equipment > machine > types of machine generally > [noun] > other types screw-machine?1746 self-driving1859 jig1875 pop-up1880 portable1900 positioner1903 slave1940 mobile unit1968 1903 U.S. Patent 718,587 2/1 A thread-positioner engages such part of the thread and pushes it down into the chamber into position to be engaged by a thread-catcher. 1934 Amer. Speech 9 229/1 Using a head positioner, a paste marker, and an exposure of four seconds, the vowels [u], [o], [a], [e] were radiographed for ten subjects. 1957 E. B. Jones Instrument Technol. III. ii. 133 The positioner also corrects for movements of the valve stem owing to unbalanced forces on the valve plug. 1972 Physics Bull. June 363/1 A micrometer stage is used to traverse the resistor under an rf probe which is held by a vertical positioner. 1999 Washington Post (Nexis) 16 Sept. a1 There are dozens of sleep positioners devised to keep infants from sleeping on their stomachs. 2011 New Scientist 22 Oct. 29 (caption) The hohlraum is placed precisely in the centre of the chamber by a positioner (bottom right) before the lasers are switched on. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022). < n.1903
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