back 3, verb (oh) and Moloney murine leukaemia virus (medicine)

back 3, verb (oh)

3 W3S2 v
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1 ?support?
2 ?move backwards?
3 ?put something on the back?
4 ?be behind something?
5 ?Music?
6 ?risk money?
7 back the wrong horse
Phrasal verbs
back away
back down
back off
back onto something
back out
back up
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?SUPPORT?
[T usually passive] a) to support someone or something, especially by giving them money or using your influence
::The scheme has been backed by several major companies in the region.
::Some suspected that the rebellion was backed and financed by the US.
::government-backed loans
b) also back up
to support an idea by providing facts, proof etc
::His claims are not backed by any scientific evidence.
?MOVE BACKWARDS?
[I always + adverb/preposition, T] to move backwards, or make someone or something move backwards
back into/out of/away from etc
::She backed into a doorway to let the crowds pass by.
back sb into/towards/out of etc sth
::He began to back her towards the open door.
back sth into/towards/out of etc sth
::I backed the car into the garage.
?PUT SOMETHING ON THE BACK?
[T usually passive] to put a material or substance onto the back of something, in order to protect it or make it stronger
::Back the photo with strong cardboard.
::a plastic-backed shower curtain
?BE BEHIND SOMETHING?
[T usually passive] to be at the back of something or behind it
::The Jandia Peninsula is a stretch of white sands backed by a mountain range.
?Music?
[T usually passive] to play or sing the Music that supports the main singer or musician
::They performed all their hits, backed by a 40-piece orchestra.
?RISK MONEY?
[T] to risk money on whether a particular horse, dog, team etc wins something
back the wrong horse
to support someone or something that is not successful
back away phr v
to move backwards and away from something, especially because you are frightened
back away from
::She backed away from the menacing look on his face.
to stop supporting a plan or idea, or stop being involved in something
back away from
::The government has backed away from its nuclear weapons strategy.
back down phr v
to admit that you are wrong or that you have lost an argument
::Both sides have refused to back down.
back off phr v
to move backwards, away from someone or something
::She backed off and then turned and ran.
to stop telling someone what to do, or stop criticizing them, especially so that they can deal with something themselves
::I think you should back off for a while.
::Back off, Marc! Let me run my own life!
to stop supporting something, or decide not to do something you were planning to do
::Jerry backed off when he realized how much work was involved.
back off from
::The company has backed off from Investing new money.
back onto [back onto sth] phr v
if a building backs onto something, its back faces it
::The hotel backs onto St Mark's Square.
back out phr v
to decide not to do something that you had promised to do
::It's too late to back out now.
::After you've signed the contract, it will be impossible to back out.
back out of
::The government is trying to back out of its commitment to reduce pollution.
back up phr v
back sb/sth ¡û¡ú up
to say or show that what someone is saying is true
::Jane would back me up if she were here.
::There's no evidence to back up his accusations.
::These theories have not been backed up by research.
back sb/sth ¡û¡ú up
to provide support or help for someone or something
::The plan's Success depends on how vigorously the UN will back it up with action.
::The police officers are backed up by extra teams of people at the weekend.
-see also backup
to make a copy of information stored on a computer
::Make sure you back up every day.
back sth ¡û¡ú up
::These devices can back up the whole system.
back sth ¡û¡ú up onto sth
::Back all your files up onto floppy disks.
-see also backup
especially AmE to make a vehicle move backwards
::The truck stopped and then backed up.
back sth ¡û¡ú up
::I backed the car up a little.
to move backwards
::Back up a bit so that everyone can see.
-see also backup
if traffic backs up, it forms a long line of vehicles that cannot move
::The traffic was starting to back up in both directions.
if a toilet, sink etc backs up, it becomes blocked so that water cannot flow out of it

Moloney murine leukaemia virus (medicine)

Moloney murine leukaemia virus
<molecular biology, virology> Replication competent retrovirus (Oncovirinae) that causes leukaemia in mice, isolated by Moloney from cell free extracts made from a transplantable mouse sarcoma.

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