Of approximately the same age. Cf. contemporary, adj. 3. Obsolete.

Coming into existence or arising at the same time; of contemporary or simultaneous origin and antiquity.

= coetaneous, adj.

Existing at or occurring during the same period of time; belonging to or originating in the same time or period. With with, or occasionally to.

= coetaneous, adj.

Of equal antiquity, of contemporaneous origin, going back to the same date.

= coeval, adj.

= coeval, adj.

Having existed or lived from the same date; equal in age, coeval. Frequently with with.

‘Born together; produced at the same time’ (Craig, 1847).

Of two or more qualities, etc.: Born together; coeval in origin; existing together as parts of the nature of their possessor.

Palaeontology. Originating or formed at the same period.