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Webster 1913 Edition

Half-ray

Half′-rayˊ

(-rāˊ)
,
Noun.
(Geom.)
A straight line considered as drawn from a center to an indefinite distance in one direction, the complete ray being the whole line drawn to an indefinite distance in both directions.

Definition 2025

half-ray

half-ray

English

Noun

half-ray ‎(plural half-rays)

  1. (geometry) A ray, or half-line.

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