Good question. I should have mentioned that before hand. Anyways, "Tres" is short for Tresses which is a term for hair and "Ology" is the study of a subject. Together you have "Tresology". I believe that this would be a great domain name for someone who would like to establish themselves as a brand and expert in the hair industry. I also can see Tresology.com being used as a place where hairstylist can sell online video courses. Similar to Masterclass.