monoline noun6 •A company operating in only one industry or line of business; often specifically a bank specializing in credit card issuance.The other leading monolines in 2002 were Capital One and Providian. — 2005 •An insurer specialized in insuring investment-grade securities against loss.The premium charged by the monoline is not for funding expected losses, as with insurance, but for enhancing an investment-grade security to a AAA level. — 2005 •A font line of consistent width, as occurs when imitating pencil script.[…] monolines appear everywhere in the art of the Western letter, and have shaped the alphabet's development as much as the edged line of the broad pen. — 1984 •A length of monofilament line, used for culturing forms of seaweed.A module consists of 21 monolines; a monoline on the other hand is 20 feet (6 m) long and consists of a nylon line plus 3 stakes— 2 at both ends and one at the middle— and 30 plants. — 1982 •A single spectrum line.The spectrum of the MS sample also includes the central broad singlet of the nitrous austenite, which is simulated as the superposition of a monoline and a doublet. — 2007 •(old-fashioned) A type of composing machine in which each line of type is cast as a single slug.With the straight matter being set on the linotype or monoline, the hand compositor was left with what he claimed was the most 'skilled' part of his old work. — 1993 formsmonolines