Question

what does the root semi mean?
four
many
one-half
bend or curve
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Explanation:

The root "semi-" is a Latin-derived morpheme that denotes a half portion or partial state, as seen in words like "semicircle" (half a circle) or "semiannual" (twice a year, every half year). The other options do not match this definition: "four" relates to the root "quad-", "many" relates to roots like "multi-", and "bend or curve" relates to roots like "flex-" or "curv-".

Answer:

one-half