emp·tio-ven·di·tio \ˈem(p)tēˌōˌwenˈdid.ēˌō\noun oremptio et venditio\-tēˌō(ˌ)et(ˌ)w-\ Etymology: Latin emptio et venditio buying and selling : the consensual contract between two parties for the purchase of something by one party and its sale by the other at an agreed price