精せい神しん衛えい生せい学がくMeaningsNoun1. mental hygieneKanji used精spirit (of life)神god衛defend生life学studyComposed of精せい神しん衛えい生せいmental health; mental hygieneNoun学がくlearning; scholarship; study; erudition; knowledge; education; study of ...; -ology; -icsNoun