simultaneity

noun

simul·​ta·​ne·​i·​ty

ˌsīməltəˈnēətē, 

ˌsim-, 

-ēətē, 

-i

plural -es

: the quality or state or an instance of being simultaneous

the simultaneity of these events has been exaggerated

—G. G. Simpson

specifically : the presentation of different views of the same object (such as a profile and full view of a face) in one work of art

simultaneity … in Egyptian painting

—Helen Gardner

Word History

Etymology

Medieval Latin simultaneitas, from (assumed) Medieval Latin simultaneus + Latin -itas -ity

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Rhymes for simultaneity

• homogeneity
• contemporaneity
• heterogeneity
• inhomogeneity
• deity
• spontaneity