have a part in

:  one of the often indefinite or unequal subdivisions into which something is or is regarded as divided and which together constitute the whole

:  an essential portion or integral element

:  one of several or many equal units of which something is composed or into which it is divisible :  an amount equal to another amount

:  to separate from or take leave of someone

:  to take leave of one another

:  to become separated into parts

:  partly

:  partial

: participial; participle

: particular