moiety

noun4

1. •
   A half.

   • The death of Anthony / Is not a single doome. In the name lay / A moity of the world. — 1606
2. •
   A share or portion, especially a smaller share.

   • Arrangements were made with the B. & M.R., however, whereby the latter took over the Machen Loop in consideration for granting the P.C. & N.R. a moiety of the earnings of the Caerphilly branch. — 1949
3. •
   A specific segment of a molecule.

   • Aniline has both a phenyl and an amino moiety.
4. •
   Each descent group in a culture which is divided exactly into two descent groups.