Lactic a. : Of or pertaining to milk; procured from sour milk or whey; as, lactic acid; lactic fermentation, etc.

Example:
How long should Lactic acid last and how do i know if its Lactic acid?

Taxonomy
Lactic acid, concentration, exercise, ATP, meat products, hydrogen ions, Robergs, free encyclopedia, sodium lactate, hydroxypropanoic acid, compounds, factors, PCO2, D/L, intense exercise, acidic, Potassium lactate, PURAC.

Defination from the web:
Lactic acid (IUPAC systematic name: 2-hydroxypropanoic acid), also known as milk acid, is a chemical compound that plays a role in several biochemical processes. ... Industrially, lactic acid fermentation is performed by Lactobacillus bacteria, among others. ...