We found one dictionary that defines the word ultra-capacitor:

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1. Ultra-capacitor: Encyclopedia

▸ Words similar to ultra-capacitor ▸ Usage examples for ultra-capacitor ▸ Idioms related to ultra-capacitor ▸ Wikipedia articles (New!) ▸ Words that often appear near ultra-capacitor ▸ Rhymes of ultra-capacitor ▸ Invented words related to ultra-capacitor