prefix syntax

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

prefix notation
prefix syntax

   <language> (Or "prefix syntax") One of the possible orderings
   of {functions} and {operands}: in prefix notation the function
   precedes all its operands.  For example, what may normally be
   written as "1+2" becomes "(+ 1 2)".  A few languages (e.g.,
   {lisp}) have strictly prefix syntax, many more employ prefix
   notation in combination with {infix notation}.

   Compare: {postfix notation}.

   (2001-02-14)