The most common and most likely answer to this crossword clue is the 11 letter word RENAISSANCE
I've seen this crossword clue in The Times
R
E
N
A
I
S
S
A
N
C
E
More clues leading to the result RENAISSANCE
- Survey ignoring Conservative revival
- Survey overlooking Conservative revival
- Conversion of sinner, a case for rebirth
- Time with hint of modernity, as seen in car being developed
- Military survey with no argument against revival of culture
- Insane races in movement that started in Italy
- Doctor in Caesareans sidestepping an advanced new birth
- Revival in arenas since being redeveloped
- Car, in a sense, stirred new awakening
- New dawn as rains cease spreading across North
Buddy explains!

The straight part
We know that "revival" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case revival = renaissance.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 RENAISSANCE mean?
RENAISSANCE noun- A rebirth or revival.
- (historic) Alternative form of Renaissance