I wouldn't call it a neologism, rather a construction.

It's as logical as

• one https://en.wiktionary.org/wiki/monosyllabically
• two https://en.wiktionary.org/wiki/disyllabically
• three https://en.wiktionary.org/wiki/trisyllabically

if you can count in Greek Latin*, that is. ;-)

update

NB: the same word in German - siebensilbig - is shorter and easily understood by German speakers.

*) doh ... thanks Eily++ ... see also Numeral_prefix

German famously pastes words together to get new ones. The one that I use as illustrative for english speakers is "genital traffic" = Geshlechtsverkehr, = sex.

Sorry for destroying the myth, but ... :)

Geschlecht normally means "sex/gender", you'll find it on every passport without meaning "genital".

Verkehr also means intercourse, like in social contact.

It's a pretty formal word best translated as "sexual intercourse" and actually needs the same amount of space

Geschlechtsverkehr
sexual intercourse
[download]

Please note that it's not that hard to decode because the "s" was inserted to glue the two words.

(compare Sankt Petersburg which becomes "Sankt Peterburg" (Санкт-Петербу́рг) in Russian.)

German is very constructive, even kids can intuitively decipher words which are normally Latin/Greek monsters in English or French.

like hypoglycemic = unterzuckert (under sugared)

Cheers Rolf
_{(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}