12-Letter Words Containing: O,N,I,N,S

• operating in unison

• an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot to synchronize the propellers of a plane that has two or more engines)

• make synchronous and adjust in time or manner

• happen at the same time

• make (motion picture sound) exactly simultaneous with the action

• arrange or represent events so that they co-occur

• operate simultaneously

• cause to indicate the same time or rate

• blue pigment in algae

• a transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelid

• serving or tending to connect

• an uninflected function word that serves to conjoin words or phrases or clauses or sentences

• involving the joint activity of two or more