Baseline

Part of speech: noun

Pronunciation: /ˈbeɪslaɪn/

Definitions

1. A reference point or standard against which comparisons or measurements can be made
2. A foundational point of reference that serves as a comparison metric in diverse fields like statistics, finance, and research
3. A fundamental reference used for comparison in various disciplines, including measurements, progress assessment, and performance evaluation

Etymology: "Baseline" is a plain compound of "base" and "line": a line drawn along the base of something to serve as a reference for measuring or comparing. The "base" element goes back through Old French and Latin to a Greek root meaning "bottom" or "foundation," while "line" comes from Latin "linea," meaning a thread or string, which is also the source of "linen." Together they describe a fixed starting line from which distances, scores, or measurements are taken. Its modern sense of a standard for comparison grew naturally from that surveying and measuring use. Once a baseline is established, everything else can be judged against it, so the word drifted from a literal line on the ground to any reference point, such as a baseline of prices, health, or expectations.

Synonyms: standard, benchmark, reference point, yardstick, foundation

Antonyms: outlier, deviation, exception, anomaly, irregularity