Lepidoptera (n.)

order of insects with four scaly wings, 1773, the biological classification that includes butterflies and moths, coined 1735 in Modern Latin by Swedish botanist Carolus Linnaeus (Karl von Linné, 1707-1778) from lepido- "scale" + pteron "wing, feather" (from PIE root *pet- "to rush, to fly"). Related: Lepidopteral; lepidopteran; lepidopterous.