The most common and most likely answer to this crossword clue is the 5 letter word THERM
I've seen this crossword clue in Financial Times
T
H
E
R
M
More clues leading to the result THERM
- Spell without hydrogen gives measure of the gas industry
- A jolly lot put together a little house-warming?
- The powers that be have run hot bath
- Marines unit displaying heat
- Heating unit in the space vacated
- It’s not us dressing right for some heat
- Unit of heat weather map contains
- Unit at health centre finally has room
- Trademark covers woman’s gas unit
- What radiator puts out, giving a bit of heat in the end
Buddy explains!
The straight part
We know that "Unit of heat" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case unit of heat = therm.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 THERM mean?
THERM noun- A former unit of heat equal to 100,000 British thermal units. Symbol: thm.