In language a door can be considered a synonym for portal. If an individual can open a door, then in the same context an individual can open a portal. A portal is simply a gateway, or entry-point, to another location.
The case is the wood that surrounds the opening, the portal is the actual opening.
The prefix for portal is "port-", which means a door or entrance.
A portal.
Portal door
Opening, portal, hole, entrance.
a door
He opened the portal to "Christmastown".
After you exit the portal, go to the other end of the room. There you will see a big door. On the door's left you can see a big machine. go to it and type in the numbers you've collected. Once this is done, the door will open!
its not exactly a portal its more like a door outside
An archway/door with a sculpted design with figures above it.
Barbican
First you need the card key which is on floor 5 then after getting the card key head down to the 3rd floor and open the left door near a rocket grunt beyond the door is a portal go on this portal and you will be on floor 7 and you will see your rival beat him and talk to the man nearby he will give you lapras. Then go on the portal below you and then your on floor eleven, beat the rocket and Giovanni then talk to the old guy he will give you the masterball.