The most common and most likely answer to this crossword clue is the 9 letter word TUMESCENT
T
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M
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N
T
More clues leading to the result TUMESCENT
- Body part close to collapse, and nose is distended
- Having got firm, corporation on e-trail
- Bloated stomach egghead’s to detect
- Swollen stomach beginning to extrude — and smell!
- Spare tyre going down, not at first being inflated
- Swollen up with initial excitement – must order some change
- Doctor must inject drug, Penny's all swollen up
- Doctor must inject drug, there is some change in swelling
- Aroused with short tutu, mesmeric midsection, and perfume
Buddy explains!

The straight part
We know that "swelling" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case swelling = tumescent.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 TUMESCENT mean?
TUMESCENT adjective- Swollen or distended with fluid, as of erectile tissue.
- Inflated or overblown.