Definitions for lacticˈlæk tɪk
Random House Webster's College Dictionary
of, pertaining to, or obtained from milk.
Origin of lactic:
1780–90; < L lact-, s. of lac milk +-ic
of or relating to or obtained from milk (especially sour milk or whey)
"lactic acid"; "lactic fermentation"
Of, relating to, or derived from milk
Origin: From lactis, genitive form of lac.
of or pertaining to milk; procured from sour milk or whey; as, lactic acid; lactic fermentation, etc