Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
high-voltage is an adjective meaning "operating on or powered by a high voltage". It carries 2 recorded senses.
operating on or powered by a high voltage
“a high-voltage generator”
vigorously energetic or forceful
“a high-octane sales manager”
“a high-octane marketing plan”
“high-powered executives”
“a high-voltage theatrical entrepreneur”
Definitions, synonyms and semantic relations for high-voltage come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.