from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a class of cyclic amides, that are the nitrogen analogs of lactones, formed by heating amino acids; the tautomeric enol forms are known as lactims.
from the GNU version of the Collaborative International Dictionary of English
- n. One of a series of anhydrides of an amido type, analogous to the lactones, as oxindol; a cyclic amide.
from The Century Dictionary and Cyclopedia
- n. The name of a class of organic compounds containing the group or They are formed by the elimination of water from γ-or δ-amino acids respectively, the reaction being characteristic of these two classes of compounds. They are simple cyclicacid amides.
Sorry, no etymologies found.