dichotomous key

noun

: a key for the identification of organisms based on a series of choices between alternative characters

Word History

First Known Use

circa 1889, in the meaning defined above

Time Traveler
The first known use of dichotomous key was circa 1889

Dictionary Entries Near dichotomous key

dichotomous

dichotomous key

dichotomy

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Cite this Entry

“Dichotomous key.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dichotomous%20key. Accessed 3 Nov. 2024.

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Kids Definition

dichotomous key

noun
: a series of pairs of phrases or descriptions which are used to classify a group of living things by making choices between the sets of traits and characters described in each pair

Medical Definition

dichotomous key

noun
: a key for the identification of organisms based on a series of choices between alternative characters
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