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Umbilicus vs Bellybutton - What's the difference?

umbilicus | bellybutton |

As nouns the difference between umbilicus and bellybutton

is that umbilicus is navel while bellybutton is the navel or umbilicus.

umbilicus

English

Noun

(en-noun)
  • (anatomy) navel
  • (botany) hilum
  • (zoology) A depression or opening in the center of the base of many spiral shells.
  • (zoology) Either of the two apertures in the calamus of a feather.
  • (geometry, obsolete) One of the foci of an ellipse or other curve.
  • (geometry) A point of a surface at which the curvatures of the normal sections are all equal to each other.
    • A sphere may be osculatory to the surface in every direction at an umbilicus .
  • (historical) An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled.

    • Synonyms

    * (navel) omphalos * (navel) omphalus

    Derived terms

    * umbilical * umbilical artery * umbilical cord * umbilical hernia * umbilical vein

    bellybutton

    English

    Alternative forms

    * belly button

    Noun

    (en noun)
  • (informal) the navel or umbilicus