The quality of being contemporary; the state of belonging to or reflecting the current time period.
From 'contemporary' plus the noun-forming suffix '-ness.' This is an older variant for expressing the abstract concept, now largely superseded by 'contemporaneity.'
This word shows English's tendency to keep old vocabulary around even when newer, fancier alternatives emerge—'contemporariness' still works perfectly, but scholars often choose the longer 'contemporaneity' instead.
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