microkerneln.
/ˈmʌɪkrə(ʊ)ˌkəːnl/, U.S. /ˈmaɪkroʊˌkərn(ə)l/ Computing.
In operating system design: a kernel which has only the most basic inbuilt functions, and can be configured to suit different systems by the addition of software modules. Also attributive: designating a modular approach to operating system design. See kernel n.1 Additions.
ΚΠ
1991 UNIX World Jan. 13 Chorus claims that UNIX's structure is dying. To extend its life another 10 years requires extensive modularization using a microkernel approach.
1993 Computing 21 Oct. 48/2 It is the microkernel that has to be central processing unit (CPU) specific; that is, binary compatible with each processor and its specific memory architecture.
1994 Byte Jan. 120/1 A microkernel implements essential core operating-system functions... Exactly which system services are nonessential and capable of being relegated to the periphery is a matter of debate among competing microkernel implementers.
1996 Internet World Dec. 72/2 Sun will use a Microsparc II chip and rely on a microkernel operating system and 8MB of RAM.
This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022).
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