PsocopteraPronunciation: /sə(ʊ)ˈkɒptərə/Definition of Psocoptera noun Entomology an order of insects that comprises the booklice and other psocids. Derivatives psocopteran noun & adjective Origin:modern Latin (plural), from Psocus (genus name) + pteron 'wing'Psocoptera in other Oxford dictionaries Definition of Psocoptera in the US English dictionary