Definition

1. Adjective:
   • Representing a plane made by cutting across something at right angles to its length: This describes a view, slice, or analysis that shows the internal structure of an object as if it has been cut straight through perpendicularly to its main axis.
   • Of or relating to a cross section: This pertains to anything involving or derived from such a cut, or more broadly, to a representative sample taken from a larger group at a single point in time.

Usage Examples

• Adjective:
  • The diagram provides a cross-sectional view of the engine, revealing all the internal components.
  • Researchers conducted a cross-sectional study to analyze the dietary habits of different age groups in 2023.
  • A cross-sectional slice of the tree trunk showed its annual growth rings clearly.

Advanced Usage

• In research and statistics: A "cross-sectional study" is a type of observational study that analyzes data from a population, or a representative subset, at a specific point in time. It contrasts with longitudinal studies, which observe the same subjects over a period.
  • The cross-sectional survey aimed to capture a snapshot of public opinion immediately after the election.

Variants and Related Words

• Cross section (noun): 1. A surface or shape exposed by making a straight cut through something, especially at right angles to an axis. 2. A representative sample of a larger group.
  • The architect examined the cross section of the beam.
  • The survey participants formed a cross section of the city's population.

Synonyms

• Transverse: Situated or extending across something.
• Representative sample: A subset of a population that accurately reflects the members of the entire population.

Related Phrases

• Cross-sectional area: The area of a two-dimensional shape obtained when a three-dimensional object is sliced perpendicularly to a specified axis.
  • The cable's strength is determined by its cross-sectional area.

Adjective

1. representing a plane made by cutting across something at right angles to its length
   • cross-section views of the neck
2. of or relating to a cross section
   • a cross-sectional slice