contemporaneous

happening or existing during the same period of time

Contemporaneous is an adjective which refers to something existing, occurring or originating simultaneously with another thing. Etymologically, the word has a Latin root: tempus, meaning ‘time’. While the word shares elements of its meaning with the word ‘contemporary’, they are used slightly differently.

Contemporary can be used both as an adjective to refer to something that is existing or happening at the present moment, and can also be used as a noun to describe an individual who was alive at the same time as another. Contemporaneous, on the other hand, is always used as an adjective to refer to things that coexist in time.

The word contemporaneous was featured recently in a New York Times article focused on President of the United States Donald Trump and former FBI director James Comey, which stated: “An F.B.I. agent’s contemporaneous notes are widely held up in court as credible evidence of conversations.”

contemporaneous

happening or existing during the same period of time

There are several contemporaneous accounts of the meeting.
contemporaneous with: His work is contemporaneous with the beginnings of the Pop Art movement.