Mid 17th century; earliest use found in John Evelyn (1620–1706), diarist and writer. From classical Latin rēsīnāceus having the qualities of resin (from rēsīna + -āceus: see -aceous) + -ous.
Definition of resinaceous in US English:
resinaceous
adjectiveˌrɛzɪˈneɪʃəs
rare
That yields resin.
Origin
Mid 17th century; earliest use found in John Evelyn (1620–1706), diarist and writer. From classical Latin rēsīnāceus having the qualities of resin (from rēsīna + -āceus: see -aceous) + -ous.