12-Letter Words Starting: SYN

• 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

• combine so as to form a more complex, product

• combine and form a synthesis

• become fused

• unite (beliefs or conflicting principles)

• an intellectual who synthesizes or uses synthetic methods

• (music) an electronic instrument (usually played with a keyboard) that generates and modifies sounds electronically and can imitate a variety of other musical instruments

• 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)

• birth defect in which there is partial or total webbing connecting two or more fingers or toes

• the relation that exists when things occur at the same time