sidereal

English

WOTD – 6 September 2006

Alternative forms

• sideral

Etymology

(deprecated template usage) [etyl] Latin sīdereus, from sīdus (“star”).

Pronunciation

• IPA^(key): /saɪˈdɪəɹi.əl/
• IPA^(key): /saɪˈdɪɹi.əl/, /səˈdɪɹi.əl/

• Audio (US):

  (file)

  or

  Audio (US):

  (file)

Adjective

sidereal (not comparable)

1. Of or relating to the stars.
   • 1919, Hector Macpherson, S.Chapman (series editor), Men of Science: Herschel, Chapter V,

     The field of sidereal astronomy, therefore, was virtually untrodden when, shortly after the beginning of his telescopic work, Herschel began his first review of the heavens.

2. (astronomy) Relating to a measurement of time relative to the position of the stars.
   • 1903, Percival Lowell, The Solar System, Chapter I,

     Then, from a sufficient number of observations of synodic periods to give their mean, we obtain the sidereal period, or period with reference to the stars.

3. (astronomy) Relating to a measurement of time relative to the point of the vernal equinox.

Derived terms

• sidereal astrology
• sidereal clock
• sidereal day
• sidereal hour
• sidereal month

• sidereal noon
• sidereal period
• sidereal table
• sidereal time
• sidereal year

Translations

of or relating to the stars

• Bulgarian: зве́зден (zvézden)
• Chinese:

  Mandarin: 星的 (zh) (xīng de), 恆星的／恒星的 (zh), 恒星的 (zh) (héngxīng de)

• Finnish: tähti- (fi)
• French: sidéral (fr)
• German: siderisch (de), Stern- (de)
• Irish: réaltach
• Italian: siderale (it) m or f
• (deprecated template usage) {{trans-mid}}
• Japanese: 星の (ja) (ほしの, hoshi no), 恒星の (ja) (こうせいの, kōsei no)
• Korean: 항성(恒星)의 (hangseong'ui), 별의 (byeorui)
• Lithuanian: žvaigždinis
• Portuguese: sideral (pt), sidéreo (pt)
• Russian: звёздный (ru) (zvjózdnyj)
• Spanish: sidéreo
• Welsh: serol

relating to a measurement of time relative to the position of the stars

• Czech: siderický
• Finnish: sideerinen
• French: sidéral (fr)
• (deprecated template usage) {{trans-mid}}
• German: siderisch (de)
• Irish: réaltach
• Italian: siderale (it) m or f

Anagrams

• realised, resailed, serialed