constant

1. constant (adj) — sense 1

Definition: Unchanged through time or space; permanent.

2. constant (adj) — sense 2

Definition: Consistently recurring over time; persistent.

Example: The constant pinging of electronic devices is driving many people to the end of their tether. Electronic devices not only overload the senses and invade leisure time. They feed on themselves: the more people tweet the more they are rewarded with followers and retweets.

3. constant (adj) — sense 3

Definition: Steady in purpose, action, feeling, etc.

Example: Both loving one fair maid, they yet remained constant friends.

4. constant (noun) — sense 4

Definition: That which is permanent or invariable.

5. constant (noun) — sense 5

Definition: A quantity that remains at a fixed value throughout a given discussion or operation.

Example: 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..

6. constant (noun) — sense 6

Definition: Any property of an experiment, determined numerically, that does not change under given circumstances.

Example: 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−).