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hemi-(word root) half
Examples of words with the root hemi-: hemisphere
1. Half: hemihedral.
2. Partial; partially: hemiparasite.
[from Latin, from Greek hēmi-]
a combining form meaning “half”: hemimorphic.
[< Greek hēmi- half, c. Latin sēmi- semi-]
A prefix meaning "half," as in hemisphere, half a sphere.