What does adnate mean?
The definition of adnate
Ad”nate, a.
Etym: [L. adnatus, p. p. of adnasci. See Adnascent, and cf. Agnate.]

1 (Physiol.)
Grown to congenitally.
2 (Bot.)
Growing together; — said only of organic cohesion of unlike parts. An anther is adnate when fixed by its whole length to the filament. Gray.
3 (Zoöl.)
Growing with one side adherent to a stem; — a term applied to the lateral zooids of corals and other compound animals.