The most common and most likely answer to this crossword clue is the 12 letter word ANAESTHETIST
A
N
A
E
S
T
H
E
T
I
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T
More clues leading to the result ANAESTHETIST
- Number working in a theatre
- Number Ten at sea, this proving disastrous
- Number of people being operated on
- Doctor‘s horrible combination of a statin and ether’s not right
- A hospital number
- A number of those undergoing 13 procedures
- Expert whose clients are relieved to go under
- The number of people in operation theatre
- Number one at hiding these, it's criminal
- One delivering numbers in a theatre
Buddy explains!

The straight part
We know that "Number" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case number = anaesthetist.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ANAESTHETIST mean?
ANAESTHETIST noun- One who gives an anesthetic.