The most common and most likely answer to this crossword clue is the 9 letter word MONOGRAPH
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More clues leading to the result MONOGRAPH
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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 MONOGRAPH mean?
MONOGRAPH noun- A scholarly book or a treatise on a single subject or a group of related subjects, usually written by one person.
- To write a monograph on (a subject).
- Of the FDA: to publish a standard that authorizes the use of (a substance).