# Polyphemus caterpillar

> English word · Noun

## Definitions
1. A large, green saturniid caterpillar with a red head; the larval form of the Polyphemus moth.

## Etymology
Polyphemus + caterpillar, by analogy with the Polyphemus moth.

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