Where does “ultracapacitor” come from?

ultracapacitor (English) comes from English capacitor, from English capacity, from Middle English capacite, from Old French capacite, from Latin capācitās, from Latin capāx, from Latin -āx, from Latin -ium — Creates adjectives from noun or verb stems.

ultracapacitor (English): A supercapacitor

Definitions

  1. A supercapacitor

Ancestry of “ultracapacitor”, step by step

ultracapacitor traces back through two separate lines of ancestry.

via English capacitor

StepLanguageWordMeaning
1EnglishcapacitorAn electronic component capable of storing...
2EnglishcapacityThe ability to hold, receive or absorb; A measure...
3Middle EnglishcapaciteAbility, competence, capableness; the degree to...
4Old Frenchcapacite
5Latincapācitāscapability; capacity
6LatincapāxThat can contain or hold much; wide, large, spacious, capacious, roomy
7Latin-āxish, -y
8Latin-iumSuffix used to form abstract nouns, sometimes...
9Latin-iusforming adjectives from nouns; nominative neuter...
10Proto-Italic-jōsForms comparative adjectives
11Proto-Indo-European-yósCreates adjectives from noun or verb stems

via English ultra

StepLanguageWordMeaning
1EnglishultraExtreme; far beyond the norm; fanatical;...
2Latinultrābeyond
3Latin-asuffixed to the roots of verbs, forms agent...
4Proto-ItalicForms masculine agent nouns from prefixed or compounded bases
5Proto-Indo-European-éh₂
Every word from Proto-Indo-European -yósEvery word from Latin -iumEvery word from Latin -ius