# retineum

> English word · Noun

## Definitions
1. Part of the eye of an invertebrate which corresponds in function with the retina of a vertebrate, hypothetical membrane resembling the retina.

## Etymology
From New Latin retineum, from Medieval Latin retina. By surface analysis, retin(a) + -eum.

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