Made tulip change size (9)

I believe the answer is:

amplitude

'size' is the definition.
(thesaurus)

'made tulip change' is the wordplay.
'change' indicates anagramming the letters.
'made'+'tulip'='madetulip'
'madetulip' is an anagram of 'AMPLITUDE'.

(Other definitions for amplitude that I've seen before include "Abundance, largeness" , "stretch" , "Profusion" , "Range" , "Maximum extent of signal or vibration" .)

I've seen this clue in The Daily Express.

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