ˌsīməltəˈnēəd.ē, ˌsim-, -ēətē, -i noun
( -es )
Etymology: Medieval Latin simultaneitas, from (assumed) Medieval Latin simultaneus + Latin -itas -ity
: 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 (as a profile and full view of a face) in one work of art
simultaneity … in Egyptian painting — Helen Gardner