semidiameter

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Englisch - Englisch
The apparent radius of a star etc, when viewed from Earth
radius, half of a diameter
{n} the half of a diameter, a radius
Half of a diameter; a right line, or the length of a right line, drawn from the center of a circle, a sphere, or other curved figure, to its circumference or periphery; a radius
the apparent radius of a celestial body when viewed as a disc from the earth
semidiameter
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