# nuclein

> English word · Noun · IPA /ˈnjuː.klɪ.ɪn/

## Definitions
1. A phosphorus-rich protein found in the nucleus of a cell, later specifically nucleohistone or nucleoprotamine; also, any similar compound present in the cell nucleus.

## Etymology
From German Nuclein, corresponding to nucleus + -in.

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