Butylating

Part of speech: verb

Definitions

1. Adding a butyl group, a four-carbon alkyl radical, to a molecule through a chemical reaction
2. Attaching a butyl substituent onto an organic compound so that its structure is modified
3. Introducing the C4H9 butyl radical into a chemical substance as part of a synthesis process

Etymology: Butylating is the present participle of "butylate", which means attaching a butyl group to a molecule, so the story is really the story of the chemical name it rests on. The core of "butyl" comes from Ancient Greek "boútūros", meaning butter, built from "boûs" (cow) and "tūrós" (cheese). The "but-" part of "butyl" was taken from that Greek root, and the "-yl" ending was added by chemists to name a radical, a group of atoms that behaves as a unit within a larger molecule. The chemistry itself came later. Chemists first isolated butyric acid from butter, which is why the Greek word for butter became the source of a whole family of names. Butyl was then used to name the four-carbon alkyl group, and "butyl" is the root that the other chemical terms are built on. The suffix "-ate" is the standard chemical ending for a salt or ester formed from an acid, and "butylate" is formed by attaching it to "butyl". Adding "-ing" to form "butylating" simply describes the process of attaching that group. The word is a modern technical coinage, so its meaning is tied directly to the chemistry rather than to any older everyday sense.