portal axle

an in-wheel transmission that lifts the drive axle increasing ground clearance, portal axles are used in the unimog as well as in other vehicles. they generally do not raise the axle much, but because of their gear reduction, they allow for a smaller differential case, because there is less strain on the differential

"why is the axle above the center of the wheel?"
"it has portal axles"
"wtf?"

portal axle by Subliminator January 21, 2010

portalable

a surface that one can place a portal

In Portal 2, that wall was not portalable so I chose a new one.

portalable by Poopcakes McGee March 29, 2013

Portalable

A surface that you can use a Aperture Brand Portal Device on. For a surface to be portalable it needs to be moon rock harvested from the moon. Origin: The only reason this word exists is that in the portal 2 editor there was tick-box for certain surfaces to be portalable.

Example: Now that's a portalable surface!

Portalable by ADefinitionofawordithink May 23, 2021

Non-portalable surface

A non-portalable surface is a wall, ceiling, or floor that you can put portals onto by using the Aperture Science Handheld Portal Device or the Aperture Science Quantum Tunneling Device. It appears in many games from Valve (some legit, some obtained using mods, and some impossible to obtain), like Half-Life 2 and Portal.

I couldn't put the exit portal, because it was a non-portalable surface! You don't even know what the white gel is made of! I have got to seriously quit co-op.

Non-portalable surface by layo the layo February 5, 2026