super-jumbo
/ˌs(j)uːpəˈdʒʌmbəʊ/originally US
adjective
1Much bigger than is standard or usual; extremely large.
2Specifically. Of a jet aircraft: that is a super-jumbo.
noun
1Anything notably large in size, especially something (usually a commercial product) significantly larger than is standard or usual.
2Specifically. A (proposed) passenger aircraft that is bigger than a jumbo jet, typically containing between five hundred and one thousand seats.
Origin
1920s. From super- + jumbo.