Found 2 items, similar to simultaneousness.
English → English (WordNet) Definition: simultaneousness simultaneousness n : happening or existing or done at the same time [syn: simultaneity]
English → English (gcide) Definition: Simultaneousness Simultaneous \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. [1913 Webster] 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. [1913 Webster]