# monotreme

> English word · Noun · IPA /ˈmɒnətɹiːm/

## Definitions
1. Any of the order Monotremata of mammals that lay eggs and have single orifices for urogenital and digestive functions (cloaca); an echidna, platypus or one of their extinct relatives.

## Etymology
From mono- + -treme.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/monotreme