Definition of definite
1a
: free of all ambiguity, uncertainty, or obscurity
demanded a definite answer Her position on the issue was definite.
b
: unquestionable, decided
the quarterback was a definite hero today a definite masterpiece saw a definite improvement in her grades
2
grammar
: typically designating an identified or immediately identifiable person or thing
the definite article the
3
: having distinct or certain limits
set definite standards for pupils to meet … the side striking the new coin is flattened and less definite.— Jed Stevenson
4a
of floral organs
: being constant in number, usually less than 20, and occurring in multiples of the petal number
stamens definite
b
: cymose
a definite inflorescence
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Merriam-Webster unabridged
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Time Traveler for definite
The first known use of definite was in 1553
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