The most common and most likely answer to this crossword clue is the 11 letter word AMALGAMATES
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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 AMALGAMATES mean?
AMALGAMATES verb- To merge, to combine, to blend, to join.
- To make an alloy of a metal and mercury.
- To combine (free groups) by identifying respective isomorphic subgroups.