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missing link

1 ENTRIES FOUND:
missing link noun
plural missing links
missing link
noun
plural missing links
Britannica Dictionary definition of MISSING LINK
[count] : 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