Which is correct?
Many experts predict that cloud computing will completely _______ desktop computing within the not-too-distant future.
Supersede is the correct spelling. The word means to supplant or take the place of. Supercede is not a word, although you’d think it might be related to intercede and precede. Superseed would be like the ones that grew Jack’s bean stalk.
For nonseed words ending with a seed sound, “supersede” is unique. Three end in “ceed” and start “ex,” “pro,” and “suc.” Otherwise, “-cede.”
“Cede” words start ac-, con-, inter-, pre-, re-, and se-. And then there is “seed.” Some “seed” words: ani-, lin-, poppy-, rape-, and bird-.