on approval, (of articles for sale) for examination with an option to buy or return
Word Origin and History for on approval
approval
n.
1680s, from approve + -al (2). According to OED, "Rare bef. 1800; now generally used instead of" approvance (1590s, from French aprovance).
Idioms and Phrases with on approval
on approval
To be returned if not satisfactory, as in They're offering custom-made shoes, manufactured from a computer design, on approval. This expression, applied nearly always to the purchase of goods, was first recorded in 1870.