microchanneln.

Brit.

/ˈmʌɪkrə(ʊ)ˌtʃanl/, U.S.

/ˈmaɪkroʊˌtʃæn(ə)l/

Origin: Formed within English, by compounding. Etymons: micro- comb. form, channel n.¹

Etymology: < micro- comb. form + channel n.¹

1. A small or microscopic channel. Esp. in microchannel plate n. Electronics a fibre-optical plate with microscopic channels through which light may travel, used to amplify an optical image.

ΚΠ

1955 Ecology 36 609/2 Surface drainage was well-developed, the microchannels being from narrow with high gradient to broad with low gradient.

1969 Internat. Electron Devices Meeting (IEEE) Oct. 22 The classic array of dynodes [in the photomultiplier] is replaced by a microchannel wafer.

1970 Abstr. Spring Meeting Optical Soc. Amer. Spring Meeting (title) Electron image amplification using microchannel plates.

1972 A. Young Slopes vii. 62 Surface flow may be divided into sheetwash, where the ground is entirely or largely covered by a moving layer of water, and rillwash, when the water flows mainly as micro-channels.

1991 New Scientist 14 Dec. 44/3 At the focus are two identical detectors, which convert the radiation into a shower of electrons in a honeycomb of tiny tubes called a microchannel plate.

1999 Protoplasma 209 181 As the blocking material was obviously located in the microchannels of the plasmodesmal cytoplasmic sleeves, the plugged plasmodesmata can be assumed to be nonfunctional.

2. Computing. Usually in form Micro Channel. A type of high-speed bus architecture introduced in 1987 in certain models of IBM computers, which allows more than one bus master (or central processing unit) to be used in a single computer. Chiefly attributive.A proprietary name in the United States.

ΚΠ

1987 Financial Times 4 Apr. 6/6 A system for moving information around inside the machine at very high speeds, which IBM calls the ‘Microchannel’ has been incorporated.

1989 PC World Oct. 67/2 This device is a true bus master, which means,..that it can send bursts of data..through the Micro Channel to memory without involving the CPU.

1994 What PC? Oct. 174/1 There are four common standards for expansion slots: 8-bit (or PC), Isa (16-bit industry-standard architecture), Eisa (32-bit extended Isa) and MCA (32-bit micro-channel architecture).

This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	microchannel
释义	microchanneln. Brit. /ˈmʌɪkrə(ʊ)ˌtʃanl/, U.S. /ˈmaɪkroʊˌtʃæn(ə)l/ Origin: Formed within English, by compounding. Etymons: micro- comb. form, channel n.¹ Etymology: < micro- comb. form + channel n.¹ 1. A small or microscopic channel. Esp. in microchannel plate n. Electronics a fibre-optical plate with microscopic channels through which light may travel, used to amplify an optical image. ΚΠ 1955 Ecology 36 609/2 Surface drainage was well-developed, the microchannels being from narrow with high gradient to broad with low gradient. 1969 Internat. Electron Devices Meeting (IEEE) Oct. 22 The classic array of dynodes [in the photomultiplier] is replaced by a microchannel wafer. 1970 Abstr. Spring Meeting Optical Soc. Amer. Spring Meeting (title) Electron image amplification using microchannel plates. 1972 A. Young Slopes vii. 62 Surface flow may be divided into sheetwash, where the ground is entirely or largely covered by a moving layer of water, and rillwash, when the water flows mainly as micro-channels. 1991 New Scientist 14 Dec. 44/3 At the focus are two identical detectors, which convert the radiation into a shower of electrons in a honeycomb of tiny tubes called a microchannel plate. 1999 Protoplasma 209 181 As the blocking material was obviously located in the microchannels of the plasmodesmal cytoplasmic sleeves, the plugged plasmodesmata can be assumed to be nonfunctional. 2. Computing. Usually in form Micro Channel. A type of high-speed bus architecture introduced in 1987 in certain models of IBM computers, which allows more than one bus master (or central processing unit) to be used in a single computer. Chiefly attributive.A proprietary name in the United States. ΚΠ 1987 Financial Times 4 Apr. 6/6 A system for moving information around inside the machine at very high speeds, which IBM calls the ‘Microchannel’ has been incorporated. 1989 PC World Oct. 67/2 This device is a true bus master, which means,..that it can send bursts of data..through the Micro Channel to memory without involving the CPU. 1994 What PC? Oct. 174/1 There are four common standards for expansion slots: 8-bit (or PC), Isa (16-bit industry-standard architecture), Eisa (32-bit extended Isa) and MCA (32-bit micro-channel architecture). This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1955
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