Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
whiz-kid is a noun meaning "someone whose career progresses rapidly". It carries one recorded sense.
someone whose career progresses rapidly
Definitions, synonyms and semantic relations for whiz-kid come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.