There isn't a specific term. Combination is probably close, but there isn't a specific term that only describes a laptop and docking station, apart from maybe 'laptop and docking station'
Docking Station
A man called Michael o'Donovan,working for Apple aroud the year 1999 came about the idea of a docking station.Soon a concept was presented to apple and the rest is history.
Docking.
"jensen docking digital music system for ipod and iphone" is one i have that does it. or the memorex one that looks like a purse called the "minimove". but they have to have the ac adapters to charge them. It wont charge when theyre running of batteries obviously.
Docking
I believe it is called docking
Docking
When two spacecraft are joined in space it is called docking.
The process of bringing two spacecraft together is called "docking"
Term used they are docking.
I believe you are talking about a device called a "Port replicator" or Docking station. These are platforms which the laptop docks to via a purpose built connector which allows all the connections you need to operate from a destop to be connected easily. Things like power, network, usb devices such as keyboard video and mouse.
A single point on a computer monitor called pixel.