(Note: NOT "kernal").
1. <operating system> The essential part of Unix or other operating systems, responsible for resource allocation, low-level hardware interfaces, security etc. See also microkernel.
2. <language> An essential subset of a programming language, in terms of which other constructs are (or could be) defined. Also known as a core language.
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Nearby terms: Kerberos « Kermit « kernal « kernel » Kernel Parlog » Kernel User Interface Package » kerning