infix notation

Infix notation is the common arithmetic and logical formula notation, in which operators are written infix-style between the operands they act on (e.g. 2 + 2). It is not as simple to parse by computers as prefix notation ( e.g. + 2 2 ) or postfix notation ( e.g. 2 2 + ), but many programming languages use it due to its familiarity.
See more at Wikipedia.org...

Noun
1. a notation for forming mathematical expressions using parentheses and governed by rules of operator precedence; operators are dispersed among the operands
(hypernym) mathematical notation

<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)