Definition of "ὣ"

Monotonic script of the lower case Greek omega: ώ, ῴ, ὼ, ῲ, ῶ, ῷ, ὤ, ᾤ, ὢ, ᾢ, ὦ, ᾦ, ὥ, ᾥ, ὣ, ᾣ, ὧ, ᾧ (polytonic realizations of ω with stress accents and/or breathing marks, subscript iota.)  examples