composting toilet

noun

plural composting toilets

: a self-contained waterless toilet having a lower composting compartment where human waste is typically mixed with a carbon-rich bulking agent (such as sawdust or peat moss) and undergoes aerobic decomposition (as by bacteria)

Examples of composting toilet in a Sentence

Recent Examples on the Web

This has a walk-in shower, a vanity sink, and a composting toilet (the toilet can also be a standard flushing unit if the owner prefers). — New Atlas, 17 Sep. 2026

Word History

First Known Use

1972, in the meaning defined above