datum-point

A surveyor sets up his equipment at the datum-point.

Definition

1. Noun:
   • A fixed reference point: A "datum-point" is a specific, known location or value used as a basis for measurement, calculation, or comparison. It serves as a standard against which other points or data are measured.
   • In surveying and engineering: A datum-point is a precisely located point on the Earth's surface, often marked by a physical monument, used as a reference for elevation or coordinates in mapping and construction.

Usage Examples

• (A fixed reference for land measurement.)
• (A baseline value for comparison.)

Advanced Usage

• "to set a datum-point": to establish a fixed reference for subsequent measurements.

  • Before building the bridge, engineers set a datum-point on the riverbank to ensure consistent height levels. (They created a standard for elevation.)

• "to use as a datum-point": to employ a known value as a basis for analysis.

  • The previous year's sales figures were used as a datum-point for projecting future growth. (The past data served as a reference.)

Variants and Related Words

• Datum (n): a single piece of information; the singular form of "data". A datum-point is a specific type of datum.

  • Each datum in the survey was carefully recorded. (Each individual piece of data.)

• Datums (n): plural of datum, often used in technical contexts to refer to multiple reference points.

  • The map includes several datums for different coordinate systems. (Multiple reference points.)

• Datum line (n): a horizontal line used as a reference for vertical measurements.

  • The datum line for the building's foundation was marked on the blueprint. (A reference line for height.)

Synonyms

• Reference point: a point used as a standard for measurement.

  • The lighthouse served as a reference point for sailors. (A known location for navigation.)

• Benchmark: a standard or point of reference against which things may be compared.

  • The company's profits set a benchmark for the industry. (A standard for comparison.)

• Baseline: a minimum or starting point used for comparisons.

  • The initial test results provided a baseline for the study. (A starting reference.)

Related Idioms

• Point of reference: a basis for comparison or evaluation.

  • Without a point of reference, it's hard to judge the size of the object. (A standard for assessment.)

• Touchstone: a standard by which something is judged or measured.

  • Honesty is a touchstone of a good leader. (A criterion for evaluation.)