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Noun: baseline  'beys,lIn
  1. An imaginary line or standard by which things are measured or compared
    "they established a baseline for the budget"
  2. The back line bounding each end of a tennis or handball court; when serving the server must not step over this line
    - service line
  3. The lines a baseball player must follow while running the bases

Derived forms: baselines

Type of: criterion, line, measure, standard, touchstone

Encyclopedia: Baseline