Propionic

Part of speech: adjective

Definitions

1. Pertaining to propionic acid or its chemical derivatives
2. Connected with the structure or compounds related to the acid known as propionic
3. Describing substances or characteristics associated with or originating from propionic acid

Etymology: The adjective comes from French "propionique," and the chemistry behind it is in the name. The acid's stem, "propion," combines Greek "protos," meaning "first," with "pion," meaning "fat." The name is usually explained as reflecting that this compound was the first in a series of acids linked to fats, placing it as the initial member of that group. The "-ic" ending is the standard chemical suffix for an acid, so "propionic" describes things tied to that acid or its derivatives. In practice, the term appears in chemistry and biochemistry, for example in discussions of propionic compounds, salts, and esters, and in the metabolism of substances that break down into propionic acid.