apo koinou
Definition - A construction that consists of two clauses that have a shared word or phrase.

Example -
I like tennis is my favourite sport.
(The word tennis is shared by the two clauses.)
Note: The word that is shared by the two clauses — e.g. tennis in the above — is called the koinon.

Etymology -
The term means "in common" in Greek.

Oxford English Dictionary -
Its first citation is from 1892:
"The whole construction may be apprehended as a sentence with one subject and two predicates. This is the so-called construction apo koinou."
( Kellner Hist. Outl. Eng. Syntax 62 )

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