Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
"Tuple" Definition
noun
A finite sequence of terms.
Source: Wiktionary
A single row in a relational database.
Source: Wiktionary
A set of comma-separated values passed to a program or operating system as a parameter to a function call.
Source: Wiktionary
In some programming languages, a data type which is similar but distinct from the list data type, whose instances are characterized by having a rather fixed arity, and the elements of which instances can differ from each other by data type. (note: this definition may overlap with the previous one.).
Source: Wiktionary
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