sign on, 1  to employ; hire. 2  to bind oneself to work, as by signing a contract: He signed on as a pitcher with a major-league team. 3  to start radio or television broadcasting, especially at the beginning of the day. 4  Computers. log1 (def 17a).
FROM FIBER TO FABRIC: ACETATE INTRODUCTION Initially invented in Europe as a varnish for airplane wings, acetate was first produced in the United States in 1924 making it the second oldest manufactured fiber.
Acetate satin fabric is thin and silky, and resists shrinking and stretching. Furthermore, acetate cloth resists mold and mildew, because it withstands moisture absorption and dries easily. Generally, acetate fabrics will need to be dry cleaned for their care.