Plural form of Thursday, the fifth day of the week. Multiple occurrences of this weekday.
From Old English Þūnresdæg, meaning 'Thor's day', named after the Norse god of thunder. This followed the Roman pattern of naming days after deities, with Thursday corresponding to Latin Iovis dies (Jupiter's day). The Anglo-Saxons substituted their thunder god Thor for the Roman Jupiter.
Thursday is the only day of the week in English that retains a clear connection to Norse mythology, while most other days blend Roman and Germanic influences. The 'th' sound at the beginning comes from the Old English letter þ (thorn), which represented the 'th' sound before it disappeared from the English alphabet.
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