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.
1 Chapman Tools (Durham, CT): midget ratchets and adaptors for Allen, Bristol, Phillips, and TORX fasteners since 1936 to repair and service everything from firearms to appliances, computers to dental equipment.  Craftsman brand hand tools, made for SEARS by Danaher Tool Group, are now a mix of USA-made and imported.