Minus sign

from WordNet (r) 3.0 (2006)

minus sign
    n 1: a sign indicating the operation of subtraction

from The Collaborative International Dictionary of English v.0.48

Minus \Mi"nus\ (m[imac]"n[u^]s), a. [L. See {Minor}, and cf.
   {Mis-} pref. from the French.] (Math.)
   Less; requiring to be subtracted; negative; as, a minus
   quantity.
   [1913 Webster]

   {Minus sign} (Math.), the sign [-] denoting minus, or less,
      prefixed to negative quantities, or quantities to be
      subtracted. See {Negative sign}, under {Negative}.
      [1913 Webster]