Apollo
Proposed by a contributor, not yet supported by evidence.
Also seen as: Apollos
Sense 1
Any of several papilionid butterflies of the genus Parnassius, especially Parnassius apollo of Eurasia (also known as the mountain apollo).
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
A very handsome young man.
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 3
An asteroid possessing an orbit that crosses the orbit of the Earth and an orbital period of over one year, with semimajor axes greater than 1 AU, and perihelion distances less than 1.017 AU.
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “Apollo” mean?
Any of several papilionid butterflies of the genus Parnassius, especially Parnassius apollo of Eurasia (also known as the mountain apollo).
Is “Apollo” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.