Greek Sea God Poseidon Took on This Equine Guise

This page is the CodyCross answer for the clue below from Science Lab, Group 303, Puzzle 5 (Thermometer).

Question is: Greek Sea God Poseidon Took on This Equine Guise

and the answer is: STALLION

Word Meaning:

STALLION — An adult male horse.

Definitions from Wiktionary.