mergulus

• (Classical) IPA^(key): /ˈmer.ɡu.lus/, [ˈmɛrɡʊɫ̪ʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈmer.ɡu.lus/, [ˈmɛrɡulus]

lucerna cum mergulō (lamp with wick)

Diminutive from mergō (“immerse, dip”) +‎ -ulus.

mergulus m (genitive mergulī); second declension

1. wick of a lamp

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• (wick): fīlum

• mergō

mergus cum mergulō (diver with chick)

Diminutive from mergus (“diver, loon”) +‎ -ulus, from mergō (“dive, plunge”).

mergulus m (genitive mergulī); second declension

1. Diminutive of mergus
2. (Late Latin, proscribed) Synonym of mergus
   • [3rd–4th century, Appendix Probi, line 194:

     mergus non mergulus

     [The correct form is] mergus, not mergulus]

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• Vulgar Latin: *merguliāre
  • Old Galician-Portuguese: mergullar
    • Galician: mergullar
      • ⇒ mergullo
      • ⇒ mergullón
      • ⇒ somorgullar
        • ⇒ somorgullo
    • Portuguese: mergulhar
      • ⇒ mergulho

• mergō
• mergus

• “mergulus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• mergulus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• mergulus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette