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

In topography, a surveyed line established with more than usual care, to which surveys are referred for coordination and correlation.

Being based on or depending on something (Definition of baseline from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Definition of baseline noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

A baseline is a value or starting point on a scale with which other values can be compared.

A baseline is an imaginary starting point or basis of comparison for something. To test how a class's performance improves over time, a researcher might begin with a baseline showing …

For most retirees, researchers often recommend combining these approaches: using immediate or deferred-income annuities to secure a baseline of guaranteed income, supplemented by …

Being based on or depending on something (Definition of baseline from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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Dec 14, 2025 · baseline (plural baselines) A line that is a base for measurement or for construction.