■ noun
1》 the actual application or use of a plan or method, as opposed to the theories relating to it.
2》 the customary or expected procedure or way of doing something.
3》 the practising of a profession.
↘the business or premises of a doctor or lawyer.
4》 the action or process of practising.
■ verb US spelling of practise .
Phrases
in (or out of ) ~ having (or not having) practised an activity or skill on a regular basis.
Origin
ME: from practise , on the pattern of pairs such as advise , advice .
Usage
Note that ~ is the correct spelling for the noun in both British and US English, and is also the spelling of the verb in US English. However, in British English the verb should be spelled practise .