Con-năs'çençe or Con-năs'çen-çy, n.
n. [Lat. con and nascentia, birth, from nascens, p. pr. of nasci, to be born.]
Sense 1. The common birth of two or more at the same time; production of two or more together. Johnson.
Sense 2. A being born or produced with another.
Sense 3. The act of growing together, or at the same time. Wiseman.