Alternate Definitions and Meaning in English. 1. Every second one of a series. Usage. 1. the cleaning lady comes on alternate Wednesdays. 2. jam every other day. Antonyms. opposite. More English Meaning.

An alternate phone number also called a second phone number, is a secondary phone number that you use as a dedicated business number. It is an ordinary phone number, no different than your primary number. Its use case defines why we call it an alternative number. For instance, you have two phone numbers.