{ Con‐nas″cence (?), Con‐nas″cen‐cy (?) }, n. [L. con- + nascentia birth, fr. nascens, p. pr. of nasci to be born.] 1. The common birth of two or more at the same tome; production of two or more together. Johnson.
2. That which is born or produced with another.
3. The act of growing together. Wiseman.