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English Lexicon

Main function

/ˈmeɪn ˈfʌŋk.ʃən/
nounCEFR B2 (Upper)Top #2500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The most important or fundamental purpose, role, or operation of a system, device, or organization.

    "The main function of the cardiovascular system is to circulate blood and deliver oxygen throughout the body."
  2. 2

    In programming and mathematics, the primary routine or primary mapping that dictates the core behavior of a program or equation.

    "The main function serves as the entry point for execution in many programming languages."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the English adjective 'main' (from Old English 'mægen', meaning power or strength) combined with 'function' (from Latin 'functio', meaning performance or execution, originating from 'fungi' to perform). Historically adopted in technical, architectural, and linguistic domains to designate the primary purpose or role of an element within a larger system.

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