sidéral
French, adjective/si.de.ʁal/
sidéral is spelled S-I-D-É-R-A-L (7 letters) and appears about once in every 2 million words in written French, the 50,716th most frequent French word form (wordfreq, 2021 data). Sidéral is a French adjective meaning “sidereal” (English Wiktionary, September 2026). The French Wiktionary (Wiktionnaire) defines it as “Qui a rapport aux astres”.
What does sidéral mean in English?
adjective
- 1
sidereal
Source: English Wiktionary, French section, dump of September 2, 2026 (CC BY-SA 4.0).
How French dictionaries define it
adjective: 1. Qui a rapport aux astres. 2. Relatif à un calcul du temps mesuré en relation au mouvement observé de l'ensemble de la voûte céleste (étoiles lointaines). 3. Qualifiait certaines plantes qui ont la propriété de prélever, grâce au soleil, l’azote de l’air et de l’absorber directement. → voir sidération
The definition in the French Wiktionary (Wiktionnaire), in French.
Source: French Wiktionary (Wiktionnaire), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of sidéral
- sidérale feminine
- sidéraux masculine plural
- sidérales feminine plural
Source: English Wiktionary and French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce sidéral?
- /si.de.ʁal/
- \si.de.ʁal\
Sources: English Wiktionary, French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to sidéral
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is sidéral in French?
sidéral appears about once in every 2 million words in written French.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).