The most common and most likely answer to this crossword clue is the 13 letter word PROLIFERATION
I've seen this crossword clue in Financial Times
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More clues leading to the result PROLIFERATION
- In favour of period of living allowance increase
- Rapid growth of port airline being developed
- Increase allowance to support common labourer, including a condition
- Anti-abortion or anti-reproduction is spreading
- Growth for helping to secure our time on earth
- In favour of person helping to produce rapid growth
- Public relations speech about biography’s rapid growth
- Increase limit after favouring long prison sentence
- Increase in numbers opposing euthanasia quotient
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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 PROLIFERATION mean?
PROLIFERATION noun- The process by which an organism produces others of its kind; breeding, propagation, procreation, reproduction.
- The act of increasing or rising; augmentation, amplification, enlargement, escalation, aggrandizement.
- The result of building up; buildup, accretion.
- The spread of biochemical, nuclear and other weapons of mass destruction to countries not originally involved in developing them.