Is there any difference between hemisphere and semisphere?

1 Answer 1


There is no difference when describing a shape.

The origin of 'Hemi' is Greek, meaning half and 'Semi' is Latin.

I have never heard anyone using the word semisphere. It appears in some dictionaries, but not all.

A similar question has been answered here: Demi-,semi-,hemi- Usage with words

  • It is in the OED. You must be thinking of some other Oxford dictionary, like NOAD.
    – Laurel
    Commented Oct 31, 2017 at 23:54
  • Perhaps ODO @Laurel lotta people think it's the OED. ODO doesn't have semisphere Commented Nov 1, 2017 at 0:17
  • Thanks @Laurel and Clare. I was using en.oxforddictionaries.com
    – GoodJuJu
    Commented Nov 1, 2017 at 0:20
  • Yeah, @GoodJuJu that's referred to around here as the ODO (Oxford dictionary online) Commented Nov 1, 2017 at 0:46
  • @Clare, thank you for the clarification. I have modified my answer to remove the 'OED' reference.
    – GoodJuJu
    Commented Nov 1, 2017 at 7:34

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