Definition

1. Noun:
   • A starting point or standard for measurement: An established fact, measurement, or condition used as a basis for comparison or calculation.
   • A boundary line in sports: A line marking a boundary or limit on a playing field, such as in tennis or baseball.

Examples of Usage

• Noun (as a standard):
  • The initial survey provided a baseline for measuring future environmental changes.
  • Her first test score will serve as a baseline to track her progress.
• Noun (in sports):
  • The tennis player served from behind the baseline.
  • The runner was tagged out before he could return to the baseline.

Advanced Usage

• "To establish a baseline": To create an initial measurement or standard for future comparison.
  • The researchers needed to establish a baseline for normal brain activity.
• "Baseline data": Initial information collected before an experiment or project begins.
  • The study's conclusions were drawn by comparing results with the baseline data.

Variants and Related Words

• Baseline (adjective): Describing a fundamental or starting level.
  • The project requires baseline funding before it can expand.
• Basal (adjective): Of, relating to, or forming a base. Often used in scientific contexts (e.g., ).

Synonyms

• Standard: An accepted level of quality or attainment.
• Reference point: A basis for evaluation or comparison.
• Benchmark: A standard or point of reference.

Related Phrases

• "Below baseline": Worse than or less than the initial standard.
  • This quarter's performance fell below baseline.
• "Against the baseline": In comparison to the original standard.
  • We will evaluate all new results against the baseline.

Noun

1. the lines a baseball player must follow while running the bases
2. the back line bounding each end of a tennis or handball court; when serving the server must not step over this line
3. an imaginary line or standard by which things are measured or compared
   • the established a baseline for the budget