a book prepared for use in schools or colleges; "his economics textbook is in its tenth edition"; "the professor wrote the text that he assigned students to buy"
constructing or tending to construct or improve or promote development; "constructive criticism"; "a constructive attitude"; "a constructive philosophy"; "constructive permission"
emphasizing what is laudable or hopeful or to the good; "constructive criticism"
concerned with systematic structure in a particular field of study
affecting or involved in structure or construction; "the structural details of a house such as beams and joists and rafters; not ornamental elements"; "structural damage"
relating to or having or characterized by structure; "structural engineer"; "structural errors"; "structural simplicity"
relating to or caused by structure, especially political or economic structure; "structural unemployment in a technological society"
a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other