the missing link

noun

Definition of the missing link

: a kind of animal that was in some ways like an ape and in some ways like a human being and that is thought to have existed in the past but has not been discovered scientists searching for the missing link

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“The missing link.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/the%20missing%20link. Accessed 11 Jul. 2020.

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