Strictly speaking, only unisons are æquisonant; but the same property is often allowed to octaves, because, to the common ear, octaves seem but a doubling of the same sound.

“It wasn’t some weird deconstruction, but an essentialization,” Mr. Lester recalled.

For the Legion, we're looking at 20th century futures rather than 19th. Analogies with steampunk might be dieselpunk, atompunk, or rocketpunk – but any Legion of Super-Heroes worthy of the name seems to be as far from the punk aspect as it's possible to get.

To this belong — optation, obtestation, interrogation.