Main Page | See live article | Alphabetical index A moiety is a specific segment of a molecule. For example, aniline has a phenyl and an amino moiety. Ethidium bromide has both these. Moiety is a term used to describe descent groups in cultures which are divided exactly into two descent groups. This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.