Woden's day — honoring Odin, equated with Mercury. The silent 'd' is a fossil of the god's name.
The fourth day of the week in many cultures, following Tuesday and preceding Thursday.
From Old English 'wōdnesdæg,' meaning 'day of Wōden,' the chief god of the Anglo-Saxon pantheon. Wōden (Old Norse Óðinn, or Odin) was identified with the Roman god Mercury through interpretatio germanica, making Wednesday the Germanic translation of Latin 'Mercuriī diēs' (day of Mercury). Both deities were associated with wisdom, eloquence, travel, and the
Wednesday is the English weekday with the most notoriously silent letter — the first 'd' is completely unpronounced (/ˈwɛnz.deɪ/), a relic of the Old English 'wōdnesdæg' where the 'd' in 'Wōden' was once fully sounded before centuries of rapid speech wore it away.