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Synonyms

indigestible

American  
[in-di-jes-tuh-buhl, -dahy-] / ˌɪn dɪˈdʒɛs tə bəl, -daɪ- /

adjective

  1. not digestible; not easily digested.


indigestible British  
/ ˌɪndɪˈdʒɛstəbəl /

adjective

  1. incapable of being digested or difficult to digest

  2. difficult to understand or absorb mentally

    an indigestible book

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of indigestible

From the Late Latin word indīgestibilis, dating back to 1520–30. See in- 3, digestible

Explanation

If you've ever eaten something that your body couldn't break down and absorb, it was indigestible. Certain edible but indigestible substances are essential for maintaining a healthy digestive system. Many healthy plant foods are full of indigestible matter called dietary fiber. Our bodies lack the enzymes needed to fully break it down. This indigestible bulk helps move food through the digestive system and supports the growth of beneficial bacteria in the gut. The term now also figuratively describes information or concepts that are very difficult, or impossible, to understand or "absorb" mentally — such as the dense jargon in legal documents.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

With their high concentrations of indigestible oils and waxes, these fish are not suitable for human consumption.

From National Geographic • Feb. 13, 2024

Fiber is used as an umbrella term for indigestible plant polysaccharides, so there are many different types with varying fermentability, solubility and viscosity in the gut.

From Salon • Jan. 22, 2024

These indigestible dietary fibres are found in plant-derived foods such as onions, leeks, artichokes, wheat, bananas, and in high concentrations in chicory root.

From Science Daily • Oct. 10, 2023

At 2 hours and 30 minutes, the play can sometimes seem indulgent; parts of the story feel undigested and perhaps indigestible.

From New York Times • Jun. 22, 2022

They absorb the nourishment and cast out the indigestible parts in a tidy pellet.

From "Frightful's Mountain" by Jean Craighead George