# reverse polish notation meaning

Noun: reverse Polish notation
1. A parenthesis-free notation for forming mathematical expressions in which each operator follows its operands
- postfix notation, suffix notation

Type of: parenthesis-free notation

Encyclopedia: Reverse Polish notation

[Electronics]
Abbreviation, RPN. A system of notation for expressing mathematical operations in which the operators follow the operands being manipulated. It is a mode of entry for some calculators (e.g., the operation 7 × 2 might be entered by pressing keys in this order: 7, ENTER, 2, ×).

reverse recovery time See RECOVERY TIME,
1.
reverse resistance Symbol,
Rr. The resistance of a reverse-biased pn junction. Also called BACK RESISTANCE. Compare FORWARD RESISTANCE.

[Computer]
<language> (Or "Reverse Polish Notation", RPN) One of the possible orderings of functions and operands: in postfix notation the functions are preceded by all their operands. For example, what may normally be written as "1+2" becomes "1 2 +". Postfix notation is well suited for stack based architectures but modern compilers reduced this advantage considerably.

The best-known language with postfix syntax is FORTH. Some Hewlett-Packard calculators use it, e.g. HP-25, HP-29C, HP-41C, HP-23SII.

Compare: infix notation, prefix notation.

## Examples

More:   Next
1. reverse polish notation
2. remember struggling with reverse polish notation on your first scientific calculator
3. The HP 12c featured the reverse Polish notation mode of data entry.
4. For arithmetic operators, this follows the rule of reverse Polish notation.
5. They are also called, respectively, Polish notation and reverse Polish notation.

## Related Words

polish notation:    Noun: Polish notationA parenthesis-fre ...
reverse polish syntax:    [Computer]<language> (Or "Revers ...
polish:    Verb: polish  pólishMake (a ...
notation:    Noun: notation  now'teyshunA ...