Definition of congener
1
: a member of the same taxonomic genus as another plant or animal
2
: a person, organism, or thing resembling another in nature or action
the New England private schools and their congeners west of the Alleghenies— Oliver La Farge
3
: a chemical substance related to another
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Merriam-Webster unabridged
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Time Traveler for congener
The first known use of congener was circa 1736
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