Ketohexose

Part of speech: noun

Definitions

1. A type of sugar that contains six carbon atoms and is classified as a ketose
2. representing a monosaccharide with a ketone group in its structure
3. commonly found in various metabolic processes as an energy source and building block for larger carbohydrates

Etymology: A ketohexose is a six-carbon sugar whose carbonyl group sits at the second carbon, which is why its name is built from pieces that each describe a chemical feature. The Greek "hex" means six, and the "-ose" ending marks a sugar, a convention borrowed from "glucose," itself coined from the Greek "gleukos," meaning sweet wine or must. The prefix "keto-" comes from "ketone," a German-derived term for the carbonyl group, so the whole word reads like a chemical address: six carbons, a ketone at the second position, and sugar. Glucose, the most familiar hexose, has its carbonyl at the first carbon, making it an aldose, so the ketohexoses form a separate family. Fructose is the best-known example, and it is the sugar that makes fruit and honey taste sweeter than glucose alone. Its name follows the same logic, built from the Latin "fructus," meaning fruit.

Synonyms: fructose, psicose, sorbose, tagatose