sideral
Portuguese, adjective/si.deˈɾaw/
sideral is spelled S-I-D-E-R-A-L (7 letters) and appears about once in every 1 million words in written Portuguese, the 35,921st most frequent Portuguese word form (wordfreq, 2021 data). Sideral is a Portuguese feminine adjective meaning “sidereal (of or relating to the stars)” (English Wiktionary, September 2026). The Portuguese Wiktionary (Wikcionário) defines it as “relativo ou próprio dos astros”.
What does sideral mean in English?
adjective
- 1
femininemasculinesidereal (of or relating to the stars)
Source: English Wiktionary, Portuguese section, dump of September 2, 2026 (CC BY-SA 4.0).
How Portuguese dictionaries define it
adjective: 1. relativo ou próprio dos astros 2. relativo ao céu
The definition in the Portuguese Wiktionary (Wikcionário), in Portuguese.
Source: Portuguese Wiktionary (Wikcionário), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of sideral
- siderais plural
Source: English Wiktionary and Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce sideral?
- Brazil /si.deˈɾaw/
- Brazil [si.deˈɾaʊ̯]
- Portugal /si.dɨˈɾal/
Sources: English Wiktionary, Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to sideral
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is sideral in Portuguese?
sideral appears about once in every 1 million words in written Portuguese.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).