Definition of "LR"

LR

noun
countable and uncountable, plural LRs
1. Initialism of light rail.
2. Initialism of light railway.
proper noun
uncountable
1. (weaponry) Initialism of long rifle.
adjective
not comparable
1. (software compilation, of a parser) Initialism of left to right, rightmost derivation in reverse.
  Quotations
  In Standard LR parsing, the next parser action (shift, reduce, accept or error) is determined using the current parser state and next input symbol to check the LR parsing table.
  1991, Masaru Tomita, editor, Generalized LR Parsing, Springer, page 157
2. Initialism of long-range.