# flame cell

> English word · Noun

## Definitions
1. A specialized excretory cell that composes the protonephridium in nemerteans, rotifers, and some flatworms.

## Etymology
From its shape: the beating of the flagella on the inner surface of its cup-shaped projection resembles a flickering flame.

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