Definify.com
Webster 1913 Edition
Digestion
Di-ges′tion
(?; 106)
, Noun.
 [F. 
digestion
, L. digestio
.] 1. 
The act or process of digesting; reduction to order; classification; thoughtful consideration. 
2. 
(Physiol.) 
The conversion of food, in the stomach and intestines, into soluble and diffusible products, capable of being absorbed by the blood. 
3. 
(Med.) 
Generation of pus; suppuration. 
Webster 1828 Edition
Digestion
DIGESTION
,Noun.
 1.
 The conversion of food into chyme, or the process of dissolving aliment in the stomach and preparing it for circulation and nourishment. A good digestion is essential to health.2.
 In chemistry, the operation of exposing bodies to a gentle heat, to prepare them for some action on each other; or the slow action of a solvent on any substance.3.
 The act of methodizing and reducing to order; the maturation of a design.4.
 The process of maturing an ulcer or wound, and disposing it to generate pus; or the generation of matter.5.
 The process of dissolution and preparation of substances for manure, as in compost.