1. An experience or knowledge that has existed since time immemorial; something passed down through generations beyond recorded history
The indigenous people preserved their immemorial experience through oral traditions.
O povo indígena preservou sua experiência imemorial através de tradições orais.
2. Knowledge or practice so ancient that its origins are unknown or lost to history
The healing practices represent an immemorial experience of generations.
As práticas curativas representam uma experiência imemorial de gerações.