Definition of Semidiameter

1. Noun. The apparent radius of a celestial body when viewed as a disc from the earth.

Generic synonyms: R, Radius



Definition of Semidiameter

1. n. 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.

Definition of Semidiameter

1. Noun. (astronomy) The apparent radius of a star etc, when viewed from Earth ¹

2. Noun. (archaic obsolete) radius, half of a diameter ¹

¹ Source: wiktionary.com

Definition of Semidiameter

1. [n -S]

Medical Definition of Semidiameter

1. 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. Source: Websters Dictionary (01 Mar 1998)

Semidiameter Pictures

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Lexicographical Neighbors of Semidiameter

semidecussation
semidefinite
semideified
semideifies
semideify
semideifying
semidemiquaver
semidemiquavers
semidemisemiquaver
semiderelict
semidesert
semideserts
semidesperation
semidetached
semidetached house
semidiameter (current term)
semidiameters
semidiaphanous
semidiatessaron
semidiatessarons
semidilute
semidirect
semidirect leads
semidiscrete
semiditone
semiditones
semidiurnal
semidivine
semidocumentaries
semidocumentary

Literary usage of Semidiameter

Below you will find example usage of this term as found in modern and/or classical literature:

1. Navigation and Nautical Astronomy: The Practical Part, Containing Rules for by H. W. Jeans (1853)
"Correction or augmentation of the moon's horizontal semidiameter. The moon's semidiameter given in the Nautical Almanac is the horizontal semidiameter. ..."

2. The Elements of Practical Astronomy by William Wallace Campbell (1899)
"semidiameter 33. When we observe a celestial body having a well- defined disk, as in the case of the sun and moon, the measurements are made with reference ..."

3. Elements of Astronomy by Robert Stawell Ball (1880)
"The following values express the semidiameter of the sun when at its mean ... 960-90 Vertical semidiameter .... 960-37 1830. Bessel, by 1698 transits of the ..."

4. Elements of Astronomy by Robert Stawell Ball (1886)
"semidiameter of the Sun.—The following values express the semidiameter of the ... 960-90 Vertical semidiameter .... 960-37 1830. Bessel, by 1698 transits of ..."

5. A Treatise on Astronomy, Descriptive, Theoretical and Physical, Designed for by Horatio Nelson Robinson (1857)
"... paraj]ax js ^he semidiameter of the earth, as seen from the ... that what we call the moon's wn.ai parai. semidiameter, an observer at the moon would ..."

6. A Handbook of Practical Astronomy for University Students and Engineers by William Wallace Campbell (1891)
"semidiameter. 33. When we observe a celestial body having a well-defined disk, as in the case of the sun and moon, the measurements are made with reference ..."

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