Look up lookahead in Wiktionary, the free dictionary.
Lookahead may refer to:
Combinatorial search#Lookahead, a parameter of some combinatorial search algorithms,roughly, how deeply the graph representing the problem is explored
Parsing#Lookahead, a parameter of some parsing algorithms, the maximum incoming tokens that a parser can use to decide which rule it should use
Dynamic_range_compression#Look-ahead, signal processing design to overcome the problem of being forced to compromise between slow attack rates that produce smooth-sounding gain changes, and fast attack rates capable of catching transients
Look-ahead (backtracking), the generic term for a subprocedure that attempts to foresee the effects of choosing a branching variable to evaluate or one of its values
Lookahead carry unit, a logical unit in digital circuit design used to decrease calculation time in adder units