prefocusingn.

Brit.

/priːˈfəʊkəsɪŋ/, U.S.

/priˈfoʊkəsɪŋ/

Forms: see pre- prefix and focusing n.

Origin: Formed within English, by derivation. Etymons: pre- prefix, focusing n.

Etymology: < pre- prefix + focusing n. Compare earlier prefocus adj., prefocused adj., prefocusing adj., and later prefocus v.

The action or process of focusing beforehand or in advance.

ΘΚΠ

the world > matter > light > artificial light > an artificial light > artificial light defined by light-source > electric light > [noun] > making or adjusting specific fixture or bulb

prefocusing1950

1950 Sci. Monthly Oct. p. viii/2 (advt.) Save time, eliminate error! Simply insert the specimen slide in the prefocusing gage.

1951 Philips Techn. Rev. 12 309/1 It is of great importance that when a new bulb is fitted into a headlight its filament comes to lie exactly in the right position. This is ensured by a pre-focusing of the filament in the factory.

1963 D. Rethlingshafer Motivation as related to Personality xi. 263 An early study showing the effect of prefocusing on perceiving was by Külpe.

1991 Photo Answers May 52/1 To get over this, pre-focusing is a technique which many action photographers regularly use.

1997 N. Carroll in M. Hjort & S. Laver Emotion & Arts xii. 205 They can use their own reactions to predict the direction of the standard audience member's concern, as well as the specific emotional states the criterial prefocusing will encourage.

This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).

prefocusingadj.

Brit.

/priːˈfəʊkəsɪŋ/, U.S.

/priˈfoʊkəsɪŋ/

Forms: 1900s– prefocusing, 1900s– prefocussing.

Origin: Formed within English, by derivation. Etymons: pre- prefix, focus v., -ing suffix².

Etymology: < pre- prefix + focus v. + -ing suffix². Compare earlier prefocus adj., prefocused adj. and later prefocus v.

That focuses light or other radiation in advance of some other operation; that obviates the need for subsequent focusing.

ΚΠ

1945 Fitchburg (Mass.) Sentinel 30 Aug. 17/5 All plastic Streamliner flashlight..has a prefocusing bulb.

1969 IEEE Trans. Electron Devices 16 284/1 This mesh serves the dual function of a prefocusing lens in the approach space, and a field-flattening lens in the image space following.

2003 Jrnl. Optics 32 169 The optical system for the beamline consists of a pre-focusing toroidal mirror..and a post-focusing toroidal mirror.

This is a new entry (OED Third Edition, March 2007; most recently modified version published online March 2022).

单词	prefocusing
释义	prefocusingn. Brit. /priːˈfəʊkəsɪŋ/, U.S. /priˈfoʊkəsɪŋ/ Forms: see pre- prefix and focusing n. Origin: Formed within English, by derivation. Etymons: pre- prefix, focusing n. Etymology: < pre- prefix + focusing n. Compare earlier prefocus adj., prefocused adj., prefocusing adj., and later prefocus v. The action or process of focusing beforehand or in advance. ΘΚΠ the world > matter > light > artificial light > an artificial light > artificial light defined by light-source > electric light > [noun] > making or adjusting specific fixture or bulb prefocusing1950 1950 Sci. Monthly Oct. p. viii/2 (advt.) Save time, eliminate error! Simply insert the specimen slide in the prefocusing gage. 1951 Philips Techn. Rev. 12 309/1 It is of great importance that when a new bulb is fitted into a headlight its filament comes to lie exactly in the right position. This is ensured by a pre-focusing of the filament in the factory. 1963 D. Rethlingshafer Motivation as related to Personality xi. 263 An early study showing the effect of prefocusing on perceiving was by Külpe. 1991 Photo Answers May 52/1 To get over this, pre-focusing is a technique which many action photographers regularly use. 1997 N. Carroll in M. Hjort & S. Laver Emotion & Arts xii. 205 They can use their own reactions to predict the direction of the standard audience member's concern, as well as the specific emotional states the criterial prefocusing will encourage. This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022). prefocusingadj. Brit. /priːˈfəʊkəsɪŋ/, U.S. /priˈfoʊkəsɪŋ/ Forms: 1900s– prefocusing, 1900s– prefocussing. Origin: Formed within English, by derivation. Etymons: pre- prefix, focus v., -ing suffix². Etymology: < pre- prefix + focus v. + -ing suffix². Compare earlier prefocus adj., prefocused adj. and later prefocus v. That focuses light or other radiation in advance of some other operation; that obviates the need for subsequent focusing. ΚΠ 1945 Fitchburg (Mass.) Sentinel 30 Aug. 17/5 All plastic Streamliner flashlight..has a prefocusing bulb. 1969 IEEE Trans. Electron Devices 16 284/1 This mesh serves the dual function of a prefocusing lens in the approach space, and a field-flattening lens in the image space following. 2003 Jrnl. Optics 32 169 The optical system for the beamline consists of a pre-focusing toroidal mirror..and a post-focusing toroidal mirror. This is a new entry (OED Third Edition, March 2007; most recently modified version published online March 2022). < n.1950adj.1945
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