specialisation

from WordNet (r) 3.0 (2006)
specialisation
    n 1: (biology) the structural adaptation of some body part for a
         particular function; "cell differentiation in the
         developing embryo" [syn: {specialization},
         {specialisation}, {differentiation}]
    2: the act of specializing; making something suitable for a
       special purpose [syn: {specialization}, {specialisation}]
    3: the special line of work you have adopted as your career;
       "his specialization is gastroenterology" [syn:
       {specialization}, {specialisation}, {specialty},
       {speciality}, {specialism}]
    
from The Free On-line Dictionary of Computing (8 July 2008)
specialisation

   A reduction in generality, usually for the sake of increased
   efficiency.  If a piece of code is specialised for certain
   values of certain variables (usually function arguments), this
   is known as "{partial evaluation}".  In a language with
   {overloading} (e.g. {Haskell}), an overloaded function might be
   specialised to a non-overloaded instance at compile-time if
   the types of its arguments are known.
    

[email protected]