venti /ˈvɛnti/adjective 1noun 1forms 1 adjective1 •Larger than grande, usually 20 ounces (~ 0.6 l). noun1 •(US) A cup of coffee larger than grande, usually 20 ounces."They always order ventis," a cashier said brightly, "and are great tippers." — 2002 formsventis