Is cross being cut (7)

I believe the answer is:

scissor

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'is cross being cut' is the definition.
I can't tell whether this defines the answer.

'is cross being cut' is the wordplay.
'being cut' indicates an anagram (cut can mean mixed).
'is'+'cross'='iscross'
'iscross' is an anagram of 'SCISSOR'.

Can you help me to learn more?

(Other definitions for scissor that I've seen before include "Cut with two blades" , "Carved" .)

I've seen this clue in The Globe and Mail.

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