Definition of advt. in English:

advt.

noun

informal
  • (as written abbreviation) an advertisement.

    • ‘in case the advt. is not accepted, the payment made by the advertiser will be refunded’

Pronunciation

advt.

/ˈadvərˌtīzmənt/ /ˈædvərˌtaɪzmənt/ /ədˈvərdəzmənt/