1. <chemistry> The property of remaining in close proximity, as that resulting from the physical attraction of molecules to a substance or the molecular attraction existing between the surfaces of contacting bodies.

2. The stable joining of parts to each other, which may occur abnormally.

3. A fibrous band or structure by which parts abnormally adhere.

Origin: L. Adhaesio, from adhaerere = to stick to

(15 Jan 1998)