Chemolithotrophs

Part of speech: noun

Definitions

1. Organisms that derive energy by oxidizing inorganic compounds and use carbon dioxide as a carbon source, typically found in environments lacking organic nutrients
2. Microorganisms that obtain energy through the oxidation of inorganic molecules and fix carbon dioxide for growth, often inhabiting soil, water, or extreme habitats
3. Life forms that metabolize inorganic substances to generate energy and utilize carbon dioxide to build organic compounds, commonly playing a role in nutrient cycling in ecosystems

Etymology: Microbes that get their energy by oxidising inorganic minerals were named in the twentieth century, not in antiquity, and the name is built from two layers of Greek. The first part, "chemo-", comes from "chēmeia", the word that gave English "chemistry". Its older root is "khumeia", meaning the art of metal-casting and alloying, which passed into Arabic as "al-kīmiyā'" and into Medieval Latin as "alchemia" before the modern Latin "chēmia" was formed from it. The second layer is "lithotroph", from Greek "lithos" (stone) and "trophos" (feeder), so the whole compound means something like "stone-and-chemical feeder." The word is a modern compound of "chemo-" and "lithotroph", a term for organisms that feed on rock or mineral matter. Because the "chemo-" element ties the feeding to chemical reactions, the word separates these microbes from those that harvest light, which are called phototrophs.

Synonyms: chemoautotrophs, chemolithoautotrophs

Antonyms: phototrophs, heterotrophs