Definition

1. Adjective:
   • Relating to or along a diameter: Pertaining to, forming, or positioned along a straight line passing through the center of a circle or sphere from one side to the other.
   • Of or concerning a diameter: Involving the measurement or properties of a diameter.

Usage Examples

• Adjective:
  • The engineer calculated the diametral pitch of the gear.
  • A line drawn from one point on the circle's circumference to the opposite point is a diametral line.
  • The two points are diametral opposites on the map.

Advanced Usage

• "Diametral plane": A plane that passes through the center of a sphere or other three-dimensional object.
  • The crystal was cleaved along a diametral plane.
• "Diametral pitch": In gear design, the ratio of the number of teeth to the diameter of the pitch circle.
  • Specifying the diametral pitch is crucial for ensuring gear compatibility.

Variants and Related Words

• Diameter (n): A straight line passing from side to side through the center of a circle or sphere.
  • Measure the diameter of the pipe.
• Diametrically (adv): In a manner that is completely opposed or directly opposite.
  • Their opinions are diametrically opposed.
• Diametric (adj): Another form meaning related to or along a diameter; often used interchangeably with "diametral," but "diametric" is more common in figurative uses (e.g., diametric opposites).
  • They hold diametric views on the issue.

Synonyms

• Axial: Relating to or forming an axis.
• Central: Of, at, or forming the center.
• Opposite: Diametrically different; of a contrary kind. (Note: This is a synonym primarily in figurative use for the concept of direct opposition, as in "diametrically opposite.")

Related Phrases

• "Diametral opposition": A state of being directly or completely opposite.
  • The two theories stand in diametral opposition to each other.

Adjective

1. related to or along a diameter
   • the diametral plane