oxtant

Thân thiện

A navigator uses an oxtant to measure the sun's altitude at sea.

Definition

Noun: A unit of angular measurement equal to half a quadrant, or 45 degrees. It is an archaic term used in astronomy and navigation.

Usage

The word "oxtant" is a historical term for a specific angular measurement. It is rarely used in modern contexts, having been largely replaced by degrees or radians. It would be found in older scientific or navigational texts.

Examples

• The ancient chart divided the circle into eight oxtants.
• An oxtant of 45 degrees is equivalent to one-eighth of a full circle.

Advanced Usage

• Historical Context: The term originates from a system dividing a circle into parts based on quadrants (90-degree segments). An oxtant represents one-eighth of a 360-degree circle.

Variants and Related Words

• Quadrant (noun): A unit of angular distance equal to 90 degrees, or one-quarter of a circle.
• Sextant (noun): A navigational instrument and a unit of angular distance equal to 60 degrees, or one-sixth of a circle. (Note: This is a different, more common term; do not confuse "oxtant" with "sextant").

Synonyms

• Forty-five degrees
• Eighth of a circle (descriptive synonym)

Notes on Meaning

This word has a single, specific meaning related to angular measurement. It is not to be confused with the more common navigational instrument, the "sextant."

Học thuật

Noun

1. a unit of angular distance equal to half a quadrant