The most common and most likely answer to this crossword clue is the 10 letter word GASOMETERS
I've seen this crossword clue in The Daily Telegraph
G
A
S
O
M
E
T
E
R
S
More clues leading to the result GASOMETERS
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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 GASOMETERS mean?
GASOMETERS noun- An apparatus used to store or measure gas or the flow of gas, particularly in a laboratory setting.
- A large tank or reservoir for storing gas; a gasholder.