# CLU

> English word · Proper noun · IPA /kluː/ · frequency rank #58,603

## Definitions
1. A computer language developed between 1973–1975 that pioneered abstract data types and iterators.

## Etymology
Clipping of cluster, a concept equivalent to classes in object-oriented programming.

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