Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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American Sign Language a language used by many deaf people in North America, made up of hand movements and signs.
division sign a mathematical sign consisting of a small horizontal line with a dot above and below it, indicating that the numeral preceding it is to be divided by the numeral following it.
dollar sign a sign ($) denoting one or more dollars, or indicating that the numbers following are expressed as dollars.
equal sign a mathematical sign (=) indicating that the terms on either side of it are equal.
minus sign a mathematical sign (-) indicating subtraction or a negative quantity.
multiplication sign a mathematical sign (x) indicating that the numbers before and after it are to be multiplied.
plus sign a mathematical sign (+) indicating addition or a positive quantity.
radical sign a mathematical sign placed before a quantity to indicate extraction of its root.
re-sign to sign again.
sign in to write your name to show that you have arrived.
sign language a system of manual configurations and motions used as a language for the deaf.
sign of the zodiac any of the twelve symbols given to the parts of the zodiac.
sign up to join or cause to join a particular group, class, or activity; register.