Dictionary

missing link

noun

: something that you do not have and that you need to complete a series or to solve a problem

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

Full Definition of MISSING LINK

1
:  an absent member needed to complete a series or resolve a problem
2
a :  a hypothetical intermediate evolutionary form between humans and their presumed simian progenitors
b :  a hypothetical intermediate evolutionary form between one animal species or group and its presumed ancestors <a missing link between reptiles and birds>

Examples of MISSING LINK

  1. Police are hopeful that the new evidence will provide the missing links needed to solve the crime.
  2. scientists searching for the missing link

First Known Use of MISSING LINK

1851

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