Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

baseline

noun [C usually singular]
 
 
/ˈbeɪs.laɪn/

Definition

a line on a sports field, such as the one in tennis, that marks the end of the playing area, or the one in baseball that marks the path along which players run: She delivered a final serve from the baseline to win the match.Tennis and racket sports an imaginary line used as a starting point for making comparisons: a baseline assessmentBeing based on or depending on something
(Definition of baseline noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of baseline