13-Letter Words Starting: SY

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

• an adjustment that causes something to occur or recur in unison

• coordinating by causing to indicate the same time

• surgical interruption of a nerve pathway in the sympathetic nervous system

• 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)

• the use of symbols to convey meaning

• something visible that by association or convention represents something else that is invisible

• the practice of investing things with symbolic meaning

• arrange according to a system or reduce to a system

• Any medicine having this effect.

• That opposes the stimulation of the sympathetic nervous system.

• an organizer who puts things in order

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