Enter a clue or pattern or both:
The Clue
A hormone, for short (3 letter answer)
The Answer
MSH
Tags
Notes
The answer MSH is so rare that it appears less than once every 2500 puzzles.
Definition
MSH as a noun:
1. (melanocyte-stimulating hormone, MSH) = a hormone secreted by the anterior pituitary gland that controls the degree of pigmentation in melanocytes