lituus /litˈū-əs/

1. An augur's curved staff (historical)
2. A J-shaped Roman trumpet (historical)
3. A curve of similar form with the polar equation r² θ = a (mathematics)

• rêveur
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• rôle
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• rôtisserie
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• röntgen
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• röntgenogram
• röntgenograms
• röntgenography
• röntgenologies
• röntgenology
• röntgenoscopies
• röntgenoscopy
• röntgenotherapy