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Borrowed from Latin ēnsifer (sword-bearing).


ensifer (uncountable)

  1. (microbiology) A member of the genus Ensifer, the bacteria family of Rhizobiaceae.




From ēnsis (sword) +‎ -fer (-carrying).

Orion depicted as an ensifer (sword-bearer), Uranometria, 1603



ēnsifer (feminine ēnsifera, neuter ēnsiferum); first/second declension

  1. sword-bearing
  2. (substantive) sword-bearer
  3. (substantive) one name of the constellation Orion (like the Ancient Greek ξιφήρης (xiphḗrēs))
    • 1835. M. Annaeus Lucanus, Pharsalia (ed. Carolus Hermannus Weise) book 1, line 663 (3.61):
      Ensiferi nimium fulget latus Orionis ?


First/second declension, nominative masculine singular in -er.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
nominative ēnsifer ēnsifera ēnsiferum ēnsiferī ēnsiferae ēnsifera
genitive ēnsiferī ēnsiferae ēnsiferī ēnsiferōrum ēnsiferārum ēnsiferōrum
dative ēnsiferō ēnsiferō ēnsiferīs
accusative ēnsiferum ēnsiferam ēnsiferum ēnsiferōs ēnsiferās ēnsifera
ablative ēnsiferō ēnsiferā ēnsiferō ēnsiferīs
vocative ēnsifer ēnsifera ēnsiferum ēnsiferī ēnsiferae ēnsifera


  • ensĭfer in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • du Cange, Charles (1883), “ENSIFERI”, in G. A. Louis Henschel, Pierre Carpentier, Léopold Favre, editors, Glossarium Mediæ et Infimæ Latinitatis (in Latin), Niort: L. Favre
  • ensĭfĕr (-ger)” on page 590/3 of Félix Gaffiot’s Dictionnaire Illustré Latin-Français, Hachette (1934)
  • M. Annaeus Lucanus (1835) Pharsalia (poem).[1]
  • ensifer” on page 609/2 of the Oxford Latin Dictionary (1st ed., 1968–82)
  • Niermeyer, Jan Frederik (1976), “ensifer”, in Mediae Latinitatis Lexicon Minus (in Latin), Leiden, Boston: Brill, page 375/1
  • Glossary of Latin Words, Bible History Online. (File retrieved 10-19-07)[2]