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.
colonial - of or relating to or characteristic of or inhabiting a colony. 2. colonial - of animals who live in colonies, such as ants. 3. colonial - composed of many distinct individuals united to form a whole or colony; coral is a colonial organism.