Abiotic

Part of speech: adjective

Pronunciation: /ˌeɪ.baɪˈɑt.ɪk/

Definitions

1. Describing elements and factors in an environment that lack biological origin, including things like air, water, and minerals
2. Pertaining to the non-living physical and chemical aspects of ecosystems that affect living organisms
3. Relating to physical and chemical parts of the environment that do not contain life

Etymology: "Abiotic" is a plain technical coinage, built in the 19th century by attaching the negating prefix "a-" to "biotic," the adjective from Greek "biōtikós," meaning "of life," itself from "bíos," life. The first recorded use dates to 1874. Ecologists and environmental scientists needed a tidy way to separate the non-living parts of a habitat, such as water, temperature, soil chemistry, and light, from the living organisms that inhabit it. The construction is transparent: "a-" means "without" or "not," so the word literally means "not alive" or "not involving life." Because "biotic" was already in use for things relating to living organisms, "abiotic" slots neatly beside it as its opposite, which is why the pair turns up together in ecology textbooks.

Synonyms: nonliving, inorganic, lifeless, physical, chemical

Antonyms: biotic, living, organic, animated, alive