Top definition
A human, or other being whose eyes change color due to light, temperature, atmospheric conditions etc.
1.

Hanabeth: Woah! My cat's eyes just turned bright red! I didn't know he was polynoctal!

2.

Bobert: My girlfriend's eyes turn bright pink in the sunlight! I'm so glad she's a polynoctal.
by Urbangeek3.9 January 25, 2014
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug