adj.
- occurring continuously.
- remaining the same.
▸faithful and dependable.
n.
an unchanging situation.
▸Mathematics a component of a relationship between variables that does not change its value.
▸Physics a number expressing a relation or property which remains the same in all circumstances, or for the same substance under the same conditions.
Derivative
- constancy n.
- constantly adv.
Etymology
ME: from OFr., from L. constant-, constare ‘stand firm’, from con- ‘with’ + stare ‘stand’.