simultaneous

• POS: Adjective
• HYPHEN: sim=ul=ta=ne=ous

CIDE DICTIONARY

simultaneous, a. [LL. simultim at the same time, fr. L. simul. See Simulate.].

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

OXFORD DICTIONARY

simultaneous, adj. (often foll. by with) occurring or operating at the same time.

Idiom

simultaneous equations equations involving two or more unknowns that are to have the same values in each equation.

Derivative

simultaneity n. simultaneously adv. simultaneousness n.

Etymology

med.L simultaneus f. L simul at the same time, prob. after instantaneus etc.

THESAURUS

simultaneous

accessory, accompanying, agreeing, associated, attendant, attending, coetaneous, coeternal, coeval, coexistent, coexisting, coincident, coinciding, coinstantaneous, collateral, combined, concomitant, concurrent, concurring, conjoint, contemporaneous, contemporary, conterminous, correlative, coterminous, coupled, fellow, isochronal, isochronous, joined, joint, mutual, paired, parallel, synchronal, synchronic, synchronous, twin, unison, unisonous

ROGET THESAURUS

simultaneous

Synchronism

N synchronism, coexistence, coincidence, simultaneousness, simultaneity, concurrence, concomitance, unity of time, interim, isochronism, contemporary, coetanian, synchronous, synchronal, synchronic, synchronical, synchronistical, simultaneous, coexisting, coincident, concomitant, concurrent, coeval, coevous, contemporary, contemporaneous, coetaneous, coeternal, isochronous, at the same time, simultaneously, together, in concert, during the same time, in the same breath, pari passu, in the interim, as one, at the very moment, just as, as soon as, meanwhile.