a postal envelope for standard-size business letters 8½ × 11 inches (20 × 28 centimeters), measuring about 4½ × 9 inches (11 × 23 centimeters).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use business envelope in a sentence
How often she had dreamed of the small business envelope, addressed in an unfamiliar hand, which might one day appear there!A Bookful of Girls | Anna Fuller
There were two more pennies awaiting him on the letter rack, each enclosed in a business envelope.Quarter-Back Bates | Ralph Henry Barbour
He did not find her, but he came upon an envelope lying on the ground near the fountain—a long-shaped business envelope.The Intrusions of Peggy | Anthony Hope