So far, the vacuum cargo container is a theoretical notion.

There are also shortcomings with the theoretical notion that heroin use will eventually 'saturate' the potential user population.

A theoretical notion I'd encountered in technical reading.

For technical reasons one uses the theoretical notion of Turing machines.

Economies of scale is related to and can easily be confused with the theoretical economic notion of returns to scale.

In recent weeks this theoretical notion received what might be its strongest support yet.

An important theoretical notion concerning the final term of the above Lagrangian is the Wilson loop variable.

Before Masterminds adopt a theoretical notion, they insist on researching all the available data and checking the idea against reality.

"Just a theoretical notion," he said off-handedly, and waved airily to a passing waiter.

This appeals strictly to set theoretical notions, and is thus not exactly the same as Cantor's diagonal argument.