/ˌrɛtɪˈnʌliː/ (ret-in-oo-lee)

Definitions

1. noun

A light-sensitive cell in the compound eye of an insect, typically consisting of a cluster of retinular cells and a rhabdom.

“The compound eye of the fly consists of thousands of retinulae, each capable of detecting different wavelengths of light.”

2. plural noun

The retina of the eye in certain invertebrates, such as insects.

“The retinulae of the bee’s eye allow it to see ultraviolet light and navigate towards flowers.”