Learn how to say Adaptor correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word adaptor:
1a device for connecting pieces of equipment that cannot be connected directly:
the adaptor converts the lens focal length to 5.5 mm
a tube fixed to the cleaner by means of an adaptor
a device for connecting several electric plugs to one socket.
2a person who adapts a text to make it suitable for filming, broadcasting, or the stage.
Adaptor can also be spelled adapter: both are correct.