Conn. Gen. Stat. § 1-1n

As used in sections 4a-60 , 8-169s , 8-265c , 8-294 , 8-315 , 10-15c , 10-153 , 10a-6 , 11-24b , 16-245r , 16-247r , 28-15 , 31-22p , 31-57e , 32-277 , 38a-358 , 42-125a , 42-125b , 46a-81aa , 52-571d and 53-37a , “gender identity or expression” means a person's gender-related identity, appearance or behavior, whether or not that gender-related identity, appearance or behavior is different from that traditionally associated with the person's physiology or assigned sex at birth, which gender-related identity can be shown by providing evidence including, but not limited to, medical history, care or treatment of the gender-related identity, consistent and uniform assertion of the gender-related identity or any other evidence that the gender-related identity is sincerely held, part of a person's core identity or not being asserted for an improper purpose.