overloading

from The Collaborative International Dictionary of English v.0.48

Overload \O`ver*load"\, v. t. [imp. & p. p. {Overloaded}; p. pr.
   & vb. n. {Overloading}.] [Cf. {Overlade}.]
   To load or fill to excess; to load too heavily.
   [1913 Webster]

from The Free On-line Dictionary of Computing (8 July 2008)

overloading
ad-hoc polymorphism
operator overloading

   <language> (Or "Operator overloading").  Use of a single
   symbol to represent operators with different argument types,
   e.g. "-", used either, as a {monadic} operator to negate an
   expression, or as a {dyadic} operator to return the difference
   between two expressions.  Another example is "+" used to add
   either integers or {floating-point} numbers.  Overloading is
   also known as ad-hoc {polymorphism}.

   User-defined operator overloading is provided by several
   modern programming languages, e.g. {C++}'s {class} system and
   the {functional programming} language {Haskell}'s {type
   class}es.

   (1995-04-30)