constant

Forms

1.Unchanged through time or space; permanent.
2.Consistently recurring over time; persistent.
3.Steady in purpose, action, feeling, etc.
- His gifts, his constant courtship, nothing gained.
- Both loving one fair maid, they yet remained constant friends.
- I am constant to my purposes.
4.Firm; solid; not fluid.
- If […] you mix them, you may turn these two fluid liquors into a constant body.

1.That which is permanent or invariable.
2.A quantity that remains at a fixed value throughout a given discussion or operation.
- We also establish that constants are local extremizers of the Tomas-Stein adjoint restriction inequality as well as of another inequality appearing in the program.
3.Any property of an experiment, determined numerically, that does not change under given circumstances.
- Based on their acid dissociation constants (pKa), seleneous^([sic]) acid (H2SeO3) and selenic acid (H2SeO4) are anionic under common environmental conditions [48], e.g., as selenite (SeO32−) and selenate (SeO42−).
4.An identifier that is bound to an invariant value; a fixed value given a name to aid in readability of source code.

Uncommon· #2469

From Middle English constant, from Old French constant, from Latin constantem, accusative of constans, from cōnstāre (“to stand firm”).

Displaced native Old English singal.