What does accrete mean?
The definition of accrete
Ac*crete”, v. i.
Etym: [From L. accretus, p. p. of accrescere to increase.]

1 To grow together.
2 To adhere; to grow (to); to be added; — with to.

Ac*crete”, v. t.
To make adhere; to add. Earle.
Ac*crete”, a.
1 Characterized by accretion; made up; as, accrete matter.
2 (Bot.)
Grown together. Gray.