Adobe image file

• Adobe file-name extension
• Sharable computer file, for short
• Certain e-mail attachment
• Adobe's sharable file format
• E-ticket format
• Freebie from Adobe
• Common email attachment type
• Many a sharable PC file
• Common attached file

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
by 1992, initialism (acronym) for portable document format , a generic term.