What does digestibility mean?
Digestibility is a noun referring to how easily something — most often food — can be digested, meaning broken down and absorbed by the body. In nutrition science and animal husbandry, it is a key measurable property: researchers assess protein digestibility or nutrient digestibility to determine how much of a food's goodness the body actually takes up. Cooking methods, fibre content, and processing techniques all affect a food's digestibility, which is why the term appears frequently in dietary guidance and feed analysis. Beyond the literal sense, digestibility is also used figuratively to describe how easily ideas, arguments, or written material can be understood and absorbed by a reader, as in praising the digestibility of a complex report. The word carries a neutral, somewhat technical tone, and its opposite, indigestibility, is used when food resists easy breakdown.
The quality of being easy to digest; the degree to which a substance, especially food, can be broken down and absorbed by the body.
"Fermentation is known to enhance the digestibility of certain grains."
Commonly used in nutrition science and animal feed contexts.
The ease with which information, ideas, or text can be understood or mentally absorbed.
"Short sentences improve the digestibility of technical documentation."
Rarely pluralised; typically used only when comparing distinct types of digestibility across different foods or substances.
"Researchers compared the digestibilities of raw and cooked legumes."
A food's digestibility isn't just about your stomach — scientists measure it in labs to work out exactly how much protein your body actually absorbs from every bite.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of digestibility
Digestibility derives from 'digest', which entered English in the late Middle English period via Old French 'digeste' and ultimately Latin 'digerere', meaning 'to divide, distribute, or dissolve'. The suffix '-ibility' forms nouns denoting capacity or quality, giving the sense of 'the quality of being able to be digested'. Cognates include digestion, digestive, and digestible, all stemming from the same Latin root.
Related word forms
How digestibility is actually used
Primarily used in scientific, nutritional, and agricultural contexts when referring to food; figurative use for ideas or writing is less common but well established. Register is neutral to formal.
Easily confused with digestibility
'Digestive' is an adjective relating to digestion (as in the digestive system), whereas 'digestibility' is a noun describing how easily something can be digested.