The most common and most likely answer to this crossword clue is the 8 letter word COALESCE
C
O
A
L
E
S
C
E
More clues leading to the result COALESCE
- Company porters attending church merge in
- . Blend of Irish drinks bottled by Catholic church
- Blend of fuel key to energy
- Mix fuel source that’s key to get energy
- Join together in company with drinks before church
- Combine cold beers with retro environmental packaging
- Drinking beers, company and church come together
- Join officer on tricky case involving the French
- EEC’s changes applied to fossil fuel blend
- Come together, finding a form of solace in church
Buddy explains!

The straight part
We know that "Combine" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case combine = coalesce.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 COALESCE mean?
COALESCE verb- (of separate elements) To join into a single mass or whole.
- (of a whole or a unit) To form from different pieces or elements.
- To bond pieces of metal into a continuous whole by liquefying parts of each piece, bringing the liquids into contact, and allowing the combined liquid to solidify.