It enlists the members of congregations as volunteers, making it relatively easy for them to give a discrete amount of time, a few times a year.

A given computer will take a discrete amount of time to execute each of the instructions involved with carrying out this algorithm.

That's a very discrete, small amount of time to focus on, to figure out what the hell is going on.

This need arises when income is received only occasionally (say once per month) in discrete amounts but expenditures occur continuously.

Later, Niels Bohr showed that atoms could only emit discrete amounts of energy.

In reality there is no such thing as a discrete, or incremental, amounts of time, distance, or perhaps anything else for that matter, or 3.

More complex variations on the problem have been proposed in which the fuel can only be left or collected in discrete amounts.

To show that only certain discrete amounts of angular momentum are allowed, ℓ has to be an integer.

Is it your intellectual style to gather and master as much information as you can or to make imaginative use of a discrete amount of information?

Energy and matter are distributed in discrete amounts; you must have multiples of certain minimum quantities.