Miss ice formation of huge proportions (7)
I believe the answer is:
seismic
'miss ice formation of huge proportions' is the definition.
I can't judge whether this definition defines the answer.
'miss ice formation' is the wordplay.
'formation' is an anagram indicator.
'miss'+'ice'='missice'
'missice' is an anagram of 'SEISMIC'.
Can you help me to learn more?
(Other definitions for seismic that I've seen before include "earth-shattering effects?" , "Caused by an earthquake" , "Earthshaking" , "Of earth tremors" , "shock" .)