accrete

verb (used without object), ac·cret·ed, ac·cret·ing.

1. to grow together; adhere (usually followed by to).

verb (used with object), ac·cret·ed, ac·cret·ing.

2. to add, as by growth.

adjective

3. Botany. grown together.

verb

1. to grow or cause to grow together; be or become fused
2. to make or become bigger, as by addition