# lactam

> English word · Noun · IPA /ˈlækˌtæm/ · frequency rank #90,638

## Definitions
1. 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.

## Etymology
From lac(tone) + am(ide).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/lactam