/ ˈæmplɪfaɪ; NAmE / verb ( amp·li·fies , amp·li·fy·ing , amp·li·fied , amp·li·fied )
1.
[ vn ] to increase sth in strength, especially sound :
to amplify a guitar / an electric current / a signal
2.
( formal ) to add details to a story, statement, etc. :
[ v ]
She refused to amplify further.
[ vn ]
You may need to amplify this point.
► amp·li·fi·ca·tion / ˌæmplɪfɪˈkeɪʃn; NAmE / noun [ U ]:
electronic amplification
That comment needs some amplification.
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WORD ORIGIN
late Middle English (in the general sense increase, augment ): from Old French amplifier , from Latin amplificare , from amplus large, abundant.