Si`mul*ta"ne*ous (?), a. [LL. simultim at the same time, fr. L. simul. See Simulate.]

Existing, happening, or done, at the same time; as, simultaneous events.

-- Si`mul*ta"ne*ous*ly, adv. -- Si`mul*ta"ne*ous*ness, n.

Simultaneous equations Alg., two or more equations in which the values of the unknown quantities entering them are the same at the same time in both or in all.


© Webster 1913.