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.
American. adj. 1. of or relating to the United States of America, its inhabitants, or their form of English. 2. (Placename) of or relating to the American continent. n.3. (Placename) a native or citizen of the US. 4. (Placename) a native or inhabitant of any country of North, Central, or South America. 5.â¢merâ¢iâ¢can. 1. of or pertaining to the United States of America or its inhabitants. 2. of or pertaining to North or South America; of the Western Hemisphere. 3. a citizen of the United States of America. 4. a native or inhabitant of the Western Hemisphere.