# microRNA

> English word · Noun · frequency rank #67,646

## Definitions
1. A single-stranded, non-coding form of RNA, having only about 20-30 nucleotides, that has a number of functions including the regulation of gene expression

## Etymology
From micro- + RNA.

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