Is there a Greek term for IV?

When an option is declining in the final hour or two, it's mostly IV, not theta, I know. But is there any other way to describe this IV?
And I imagine it's not vomma or any of those obscure second or third order Greeks, right?

And I imagine it's not vomma or any of those obscure second or third order Greeks, right?
Since those all measure the amount of change in the "one level up" functions, and those are all approaching zero as tenor -> 0... yeah, nah.![]()

Vommitosa?![]()

Dude. You use terms like "contango" and "backwardation" without even blushing... and you wanna talk smack? Puh-lease.![]()
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