What does egest mean?
Egest is a formal, scientific verb meaning to discharge or void waste material from the body, most often used in physiology and biology to describe how organisms eliminate undigested or unusable matter. In single-celled creatures such as amoebas, egestion occurs when a food vacuole containing residual particles fuses with the cell membrane and releases its contents outward; in humans and other animals, the term applies to the passage of solid waste from the digestive tract. The word derives from the Latin egerere, meaning to carry out or discharge, and it pairs naturally with its opposite, ingest, which describes taking food into the body. Because egest belongs to technical register, it rarely appears in everyday conversation, where speakers prefer words like excrete or plainer phrasal alternatives. Its precision makes it valuable in scientific explanation, however, since it distinguishes the elimination of waste from the processes of digestion and absorption that precede it.
verbTo discharge or void matter from the body, especially waste products; to excrete. Used chiefly in physiology and formal scientific writing.
- (Of an organism or cell) to discharge or void waste matter or indigestible material from the body.
"The single-celled organism egests undigested food particles through its cell membrane."
"Amoebas egest undigested food by fusing a food vacuole with the cell membrane."
"In higher animals, the large intestine egests solid waste through the rectum."
Every amoeba you ever met has been egesting — this Latinate verb is how scientists politely say a cell takes out the trash.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of egest
Egest comes from the Latin verb egerere, formed from e- ('out') and gerere ('to carry'), whose past participle egestus gave the English word its form. It entered English in the early modern period as part of the wave of learned Latin borrowings that enriched scientific vocabulary. The same Latin root gerere produced a family of related English words, including gesture, digest, ingest, and congest, all of which involve the notion of carrying or bearing in some direction.
Related word forms
How egest is actually used
Egest is a technical term found mainly in physiology, biology textbooks, and formal scientific prose; ordinary English speakers almost always use 'excrete' or 'get rid of' instead. It carries a neutral, clinical connotation rather than any vulgar one.
Easily confused with egest
To digest is to break down food within the body for absorption, whereas to egest is to expel indigestible or waste material out of the body.
Eject means to force something out physically or dismiss someone forcibly in general contexts, while egest specifically refers to the biological discharge of waste matter.