Upvote:1
What is a multiple entry visa?
A multiple entry visa is a visa that lets you enter as many times as needed within its validity period. In contrast a single entry visa only lets you enter once and a double entry visa (not sure if the UK does this) only lets you enter twice.
It sounds like your travel plans would have you entering the UK three times so you would require a multiple entry visa for the UK.
You would also require appropriate visas for the USA and whatever parts of europe you plan to visit.
Can my short term student visa be a multiple entry visa?
I don't know specifically about short term student visas. Other commenters have dug up information that indicates that it can be but might not ncessacerally be. So you should probablly include details of the trips to europe and america when applying for the visa.