Webster’s Revised Unabridged Dictionary · 1913
Contemporaneous
Con·tem′po·ra′ne·ous (kŏn·tĕm′pō·rā′nē·ŭs), a. [L. contemporaneus; con- + tempus time. See Temporal, and cf. Contemporaneous.] Living, existing, or occurring at the same time; contemporary.
The great age of Jewish philosophy, that of Aben Esra, Maimonides, and Kimchi, had been contemporaneous with the later Spanish school of Arabic philosophy. Milman
— Con·tem′po·ra′ne·ous·ness, n.