(1):

(n.) The vessels by which the processes of absorption are carried on, as the lymphatics in animals, the extremities of the roots in plants.

(2):

(n.) Anything which absorbs.

(3):

(a.) Absorbing; swallowing; absorptive.

(4):

(n.) Any substance which absorbs and neutralizes acid fluid in the stomach and bowels, as magnesia, chalk, etc.; also a substance e. g., iodine) which acts on the absorbent vessels so as to reduce enlarged and indurated parts.