Definition - What does Tuple (Database) mean?
In the context of databases, a tuple is one record (one row).
Techopedia explains Tuple (Database)
In mathematics, a tuple is an ordered list of elements. Related to this is an n-tuple, which in set theory is a collection (sequence) of "n" elements. Given this, it might be more properly said that tuples are implemented as records even though the terms are commonly used interchangeably.