Beat gas protection forecast (13)

I believe the answer is:

prognosticate

'forecast' is the definition.
(I know that forecast can be written as prognosticate)

'beat gas protection' is the wordplay.
'beat' indicates anagramming the letters.
'gas'+'protection'='gasprotection'
'gasprotection' anagrammed gives 'PROGNOSTICATE'.

(Other definitions for prognosticate that I've seen before include "Augur" , "Arbitrary" , "Predict" , "divine" , "Forecast" .)

I've seen this clue in The Guardian.

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