The most common and most likely answer to this crossword clue is the 9 letter word CROSSWISE
I've seen this crossword clue in Financial Times
C
R
O
S
S
W
I
S
E
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The straight part
We know that "positioned transversely" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case positioned transversely = crosswise.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 CROSSWISE mean?
CROSSWISE adjective- Crossing; lying across
- Transversely; so as to lie across