# calyculin

> English word · Noun

## Definitions
1. Any of a class of serine/threonine protein phosphatase inhibitors originally isolated from the marine sponge Discodermia calyx.

## Etymology
From calyc- + -ule + -in.

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