Origin of ommatidium
New Latin, from Greek ommat-, omma eye; akin to Greek ōps eye — more at eye
First Known Use: 1884
Learn More about ommatidium
Britannica.com: Encyclopedia article about "ommatidium"
Seen and Heard
What made you want to look up ommatidium? Please tell us where you read or heard it (including the quote, if possible).