Meaning

• 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.

Meaning

• 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.

  "constant time   constant space"