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Latin complexus (embrace).


complexus (plural complexuses)

  1. (dated) A complex; an aggregate of parts; a complication.
    • 1827, The Oriental Herald (volume 14, page 85)
      Whenever any of the great complexuses of the nerves, by intestine jars, have entangled themselves, at my approach they range into regular order, and give mutual assistance to each other in a friendly embracing intercourse []
  2. (anatomy) A large muscle of the back, passing from the spine to the head.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for complexus in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)



Form of complector (I entwine, encircle, compass, infold), compound of com- (together) and plecto (I weave, braid).



complexus (feminine complexa, neuter complexum); first/second-declension participle

  1. embraced
  2. surrounded


First/second-declension adjective.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative complexus complexa complexum complexī complexae complexa
Genitive complexī complexae complexī complexōrum complexārum complexōrum
Dative complexō complexō complexīs
Accusative complexum complexam complexum complexōs complexās complexa
Ablative complexō complexā complexō complexīs
Vocative complexe complexa complexum complexī complexae complexa


complexus m (genitive complexūs); fourth declension

  1. An embrace


Fourth-declension noun.

Case Singular Plural
Nominative complexus complexūs
Genitive complexūs complexuum
Dative complexuī complexibus
Accusative complexum complexūs
Ablative complexū complexibus
Vocative complexus complexūs