Existing, happening, or living in the same period of time; occurring at the same time.
From Latin 'co-' (together) plus 'temporaneus' (temporal, from tempus meaning time). The '-aneous' suffix is commonly used in English to create adjectives from Latin roots, as seen in 'spontaneous' and 'erroneous'.
Shakespeare and his contemporaries were literally cotemporaneous with the Renaissance flowering of Europe—the word perfectly captures how historical figures and events cluster in the same moment of time.
Complete word intelligence in one call. Free tier — 50 lookups/day.