# pneumatode

> English word · Noun

## Definitions
1. A group of cells with spiral secondary wall thickenings, present in a velamen; acts as an airway for gas exchange for respiration or photosynthesis
2. A group of cells presumed to be specialised as an airway for ventilation of particular tissues.

## Etymology
From Ancient Greek πνεῦμα (pneûma) (breath) and ὁδός (hodós) (pathway)

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