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1 definition found
From:
Webster's Revised Unabridged Dictionary (1913)
Half-ray
n.
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
.
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