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WORDNET DICTIONARY

Noun simultaneousness has 1 sense

• simultaneousness(n = noun.attribute) simultaneity - happening or existing or done at the same time; Array
is a kind of timing
has particulars: co-occurrence, coincidence, concurrence, conjunction
Derived form adjective simultaneous₁

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simultaneousness

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.

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