Stenoecious

Part of speech: adjective

Definitions

1. Living or thriving only within a very narrow or restricted range of environmental conditions or geographic location
2. Able to exist only in a specific or limited type of habitat with particular environmental requirements
3. Restricted to a small or well-defined ecological niche with little tolerance for variation in living conditions

Etymology: "Stenoecious" is built from two Greek elements: "stenos," meaning narrow or confined, and "oikos," meaning house or dwelling, which gives us the "-oecious" ending. Together they describe something that lives in a narrow range of habitats or conditions. The word is a technical coinage of modern science rather than a word from ancient Greek, assembled from classical parts to name a biological trait. In ecology, the adjective is applied to organisms that can tolerate only a small range of environmental conditions, such as a particular temperature, salinity or food source. A species that thrives only in one kind of habitat is stenoecious, while one that copes with many conditions is described by the opposite term, "euryoecious." The pairing of "steno-" with "eury-" (broad) mirrors the familiar Greek contrast between narrow and wide.