# hairy cell

> English word · Noun

## Definitions
1. A kind of malignant B cell in an uncommon form of leukemia of unknown cause, having a "hairy" appearance under the microscope.

## Etymology
Coined in 1966.

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