baseline
🇬🇧 /ˈbeɪˌslaɪn/
🇺🇸 /ˈbeɪˌslaɪn/
📖 Definitions
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noun
A line that serves as a basis for measurement, comparison, or evaluation; a starting point or reference point.; In typography, the imaginary line upon which the bottoms of most letters in a line of text rest.; In tennis and other court sports, the line at each end of the court that marks the boundary of play.; In baseball, the imaginary line between consecutive bases that a runner must stay within.; In surveying and geodesy, a measured line used as a reference for triangulation or other measurements.; In medicine and pharmacology, the initial measurement of a patient's condition before treatment begins, used for comparison with subsequent measurements.; In project management and software engineering, an approved version of a plan, specification, or product that serves as a reference for future changes.; In statistics and data analysis, a reference value or set of values against which other data points are compared.; In electronics and signal processing, the reference level from which a signal's amplitude is measured.; In basketball, the end line at each end of the court.
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verb
To establish a baseline or reference point for measurement or comparison.
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adjective
Serving as or relating to a baseline; fundamental or minimum.
🔗 Details
Word forms
countable
Plural: baselines
3rd sing.: baselines
Past: baselined
Past part.: baselined
Pres part.: baselining
Collocations
establish a baselinebaseline measurementbaseline databaseline assessmentbaseline studyabove baselinebelow baseline
Derivatives
baselining
Synonyms
benchmarkreference pointstandardstarting pointyardstick
Commonly confused
benchmark
EN: 'Benchmark' is a standard or point of reference used for comparison, while 'baseline' is the initial measurement or starting point from which change is assessed.
base line
EN: 'Baseline' (one word) is the standard term in most contexts; 'base line' (two words) is sometimes used in sports (e.g., tennis) to refer to the line at the end of the court.
Spelling tips
EN: Write 'baseline' as one word in most contexts. The two-word form 'base line' is occasionally seen in sports terminology but is nonstandard elsewhere.
💬 Examples
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The researchers established a baseline before beginning the clinical trial.
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The descenders of letters like 'g' and 'y' extend below the baseline.
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She hit a powerful forehand from the baseline to win the point.
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The runner was called out for straying too far from the baseline.
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The surveyors carefully measured the baseline before beginning the triangulation.
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The patient's baseline blood pressure was recorded before administering the medication.
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Any changes to the requirements must be approved against the current baseline.
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The average temperature over the past thirty years serves as the baseline for climate change studies.
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The oscilloscope showed the signal oscillating above and below the baseline.
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He drove along the baseline and finished with a layup.