Tutorial comes from Late Latin tutorius ('of a guardian or tutor'), from Latin tutor ('guardian, protector'), from tueri ('to watch over'), + the suffix -al. The historical chain includes Latin tutor and Latin tueri. The quoted older senses, "of a guardian or tutor", "guardian, protector", and "to watch over", supply the semantic anchors for tutorial. The formation is best read as suffixal, compound, and borrowed: the word tutorial carries its older form-history into a compact English lexical shape. In present English it is used as a noun, "a session or guide giving instruction in a particular subject". Related English forms include tutor, tutelage, and tuition. The result is a noun and adj whose etymology preserves both the older form and the later English specialization.