The phrase "longstanding principle" refers to a belief, idea or value that has been consistently held and practiced over an extended period of time. Full definition
It is a well - established and longstanding principle of employment law that, when faced with a misconduct dismissal, an employment tribunal must not substitute its own view of the claimant's alleged conduct for that taken by the employer's disciplinary panel. (newlawjournal.co.uk)
«One of the most fundamental and longstanding principles of the museum field is that a collection is held in the public trust and must not be treated as a disposable financial asset.» (artfcity.com)
Growth hacking is a somewhat new term but is a longstanding principle of passionately pushing to improve a certain metric through executing outside - the - box tactics with the use of analytics and tools that multiply your effort. (entrepreneur.com)