hy·gien·ist | \ hī-ˈjēn-əst 
, -ˈjen-; ˈhī-ˌjēn- \
, -ˈjen-; ˈhī-ˌjēn- \Medical Definition of hygienist
: a specialist in hygiene especially : one skilled in a specified branch of hygiene mental hygienist — see dental hygienist
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