(1):

(n.) The union of different ingredients in one mass; mixture; combination; synthesis.

(2):

(n.) The union of something with a body already existing; association; intimate union; assimilation; as, the incorporation of conquered countries into the Roman republic.

(3):

(n.) A body incorporated; a corporation.

(4):

(n.) The act of incorporating, or the state of being incorporated.

(5):

(n.) The act of creating a corporation.