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.
Definition of colonial. 1  1 : a member or inhabitant of a colony. 2  2a : a product (as a coin or stamp) made for use in a colonyb : a product exhibiting colonial style; especially, often capitalized : a house built in the neoclassical style of the American colonial period.