indigestible materials; undigested matter
Technical term used in medical, biological, or dietary contexts to refer to substances that cannot be digested.
Dietary fiber stimulates the intestines as indigestible material.
Undigested matter remains in the stomach.
Refers to the condition of indigestion, whereas 不消化物 refers to the indigestible substances themselves.
Compound of 不 (negation), 消化 (digestion), and 物 (thing). The exact historical derivation is uncertain, but the word is a straightforward Sino-Japanese technical term.