spiriferous

adjective
spi·​rif·​er·​ous | \ (ˈ)spī¦rif(ə)rəs\

Definition of spiriferous

1a : having a spiral part or organ
b : spired
2 [ spirifer + -ous ] : containing or characterized by brachiopods of the suborder Spiriferacea used especially of rock

History and Etymology for spiriferous

probably from New Latin spirifer spiriferous (from spir- + -fer -ferous) + English -ous

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