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 Fabric and Viscose Fabric Information. Acetate was one of the first man-made fibers, developed by Doctors Camille and Henri Dreyfus, two Swiss brother based in Basel, Switzerland. Initially focusing on cellulose acetate for use in motion picture film, the brothers developed a workable fiber in 1913.