baseline

play
noun, often attributive base·line \ˈbās-ˌlīn\

Definition of baseline

  1. 1 :  a line serving as a basis; especially :  one of known measure or position used (as in surveying or navigation) to calculate or locate something

  2. 2a :  either of the lines on a baseball field that lead from home plate to first base and third base and are extended into the outfield as foul linesb :  basepath

  3. 3 :  a boundary line at either end of a court (as in tennis or basketball)

  4. 4 :  a usually initial set of critical observations or data used for comparison or a control

  5. 5 :  a starting point the baseline of this discussion

Examples of baseline in a Sentence

  1. The experiment is meant only to provide a baseline for other studies.

  2. any year or event we use as the baseline for the Renaissance is going to be at least somewhat arbitrary

Recent Examples of baseline from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'baseline.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of baseline

circa 1556


BASELINE Defined for English Language Learners

baseline

play
noun

Definition of baseline for English Language Learners

  • : information that is used as a starting point by which to compare other information

  • : a line at either end of the playing area in games like basketball and tennis

  • baseball : either one of the lines that lead from home plate to first base and third base


Medical Dictionary

baseline

play
noun base·line \ˈbā-ˌslīn\

Medical Definition of baseline

  1. :  a set of critical observations or data used for comparison or a control



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