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Top-up

adj, noun

Adjective

1
That serves as an addition not-comparable
"English university students will have to pay top-up fees."

Noun

1
An addition. countable, uncountable
"Energy will be generated from solar panels, water will be recycled and extracted from soil and the astronauts will grow their own food - they will also have an emergency ration and regular top-ups as new explorers join every two years."
2
an amount needed to restore something to its former level wordnet
3
A serving of drink used to top up an existing glass. countable, uncountable
4
An additional premium paid over the initial premium in order to increase benefit values. countable, uncountable
5
Additional credit purchased for a mobile phone. countable, uncountable
"I added a $20 top-up on my cellphone's data plan."

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6
A dose of epidural anesthetic added to previously injected spinal anesthetic in combined spinal-epidural anesthesia countable, uncountable
"The reinforcement of anesthesia by an epidural “top-up” in combined spinal-epidural anesthesia may be explained by a dual mechanism: a volume effect compressing the dural sac and a local anesthetic effect."
7
The situation where a student who holds a qualification equivalent to part of a degree course is then accepted onto a degree course at an intermediate point, without having to start it from the beginning. countable, uncountable

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