Late 17th century; earliest use found in Thomas Shadwell (c1640–1692), playwright and poet. Either from Middle French perdurant, use as adjective of the past participle of perdurer, or from classical Latin perdūrant-, perdūrāns, present participle of perdūrāre; compare -ant.
Definition of perdurant in US English:
perdurant
adjective
Scottish rare
Lasting, permanent; continuous.
Origin
Late 17th century; earliest use found in Thomas Shadwell (c1640–1692), playwright and poet. Either from Middle French perdurant, use as adjective of the past participle of perdurer, or from classical Latin perdūrant-, perdūrāns, present participle of perdūrāre; compare -ant.