from Wiktionary, Creative Commons Attribution/Share-Alike License
- Related to stars or constellations, as sidereal relationships.
- Related to iron or steel, as in siderosis (fibrosis caused by iron deposits).
From Latin sīdus, sideris, ("constellation"). (Wiktionary)
From Ancient Greek σίδηρος (sidēros, "iron"). (Wiktionary)
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