A book, film, etc. intended to instruct.

Intended for purposes of instruction, for teaching.

present participle of instruct

(uncountable) The act of instructing, teaching, or furnishing with information or knowledge. / (countable) An instance of the information or knowledge so furnished. / (countable) An order or command.

(obsolete) Instruction.

(transitive) To teach by giving instructions. / (transitive) To tell (someone) what they must or should do.

(obsolete) Arranged; furnished; provided. / (obsolete) Instructed; taught; enlightened.

plural of instruction

simple past tense and past participle of instruct

(obsolete) One who instructs.