Classes you need to take to become a dental hygienist. An associateâs degree in dental hygiene, which takes two years, is required to start practice. High school students should focus on core courses, including biology, chemistry, and math.
colonisation, settlement. 1  establishment, constitution, formation, organisation, organization - the act of forming or establishing something; the constitution of a PTA group last year; it was the establishment of his reputation; he still remembers the organization of the club.
colony. 1  a. A group of emigrants or their descendants who settle in a distant territory but remain subject to or closely associated with the parent country. b. A territory thus settled. 2  A region politically controlled by a distant country; a dependency. 3  a.