"George M. Middius" wrote:

Poopie is bemused.

And what noun does perpendicular come from ?

You've heard the term "three square meals", I presume. It comes from
"preprandial".

Absence of answer noted.

There really should be a suitable perpend but it's not so.

per·pend1
–noun
a large stone passing through the entire thickness of a wall.

per·pend2
–verb (used with object)
1. to consider.
–verb (used without object)
2. to ponder; deliberate.

Doesn't work.

Graham