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 for prefix syntax
From The Free On-line Dictionary of Computing (30 December 2018) :

  prefix notation
  prefix syntax
      (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.
     The opposite, postfix notation, is somewhat rarer.

Contact=webmaster@dict.org Specification=RFC 2229