That which is permanent or invariable.
A quantity that remains at a fixed value throughout a given discussion.
Any property of an experiment, determined numerically, that does not change under given circumstances.
An identifier that is bound to an invariant value; a fixed value given a name to aid in readability of source code.
Unchanged through time or space; permanent.
Consistently recurring over time; persistent.
Steady in purpose, action, feeling, etc.
Firm; solid; not fluid.
Consistent; logical.
(complexity theory) Bounded above by a constant.