infix notation n 1: a notation for forming mathematical expressions using parentheses and governed by rules of operator precedence; operators are dispersed among the operands
infix notation \in"fix no*ta"tion\, n. (Computers) A notation for commands or instructions in which the operator is inserted between the terms on which it operates. Contrasted with {prefix notation} and {postfix notation}.
infix notation infix syntax <language> One of the possible orderings of {functions} and {operands}: in infix notation the functions are placed between their operands, such as "1+2". Although infix notation is limited to binary functions most languages mix infix notation with {prefix} or {postfix} notation, as a form of {syntactic sugar}. (1997-01-17)