Accretion

ak-kre's hun, n. An increase, esp. the increase of organic bodies by the internal acce ion of as parts; increase by acce ion externally; growing together of parts naturally separate. — Accrescence, or -kres'ens, n. Gradual growth. — Accrescent, a. Increasing. — Accre'tive, -tiv, a. Growing by accretion. n.