/ nɔːm; NAmE nɔːrm/ noun
1.
(often the norm ) [ sing. ] a situation or a pattern of behaviour that is usual or expected
SYN rule :
a departure from the norm
Older parents seem to be the norm rather than the exception nowadays.
2.
norms [ pl. ] standards of behaviour that are typical of or accepted within a particular group or society :
social / cultural norms
3.
[ C ] a required or agreed standard, amount, etc. :
detailed education norms for children of particular ages
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WORD ORIGIN
early 19th cent.: from Latin norma precept, rule, carpenter's square.