opilionid
/əˌpɪlɪˈɒnɪd/Zoology
noun
An arachnid of the order Opiliones (also known as Phalangida), characterized by a small, rounded body and very long, thin legs; a harvestman.
adjective
Of, relating to, or designating arachnids of the order Opiliones.
Origin
Early 20th century; earliest use found in American Naturalist. From scientific Latin Opiliones, order name (C. J. Sundevall Conspectus Arachnidum; from Opilio, genus name from opilio, specific name (Linnaeus Systema Naturae (ed. 10, 1758) I. 618) from classical Latin ōpiliō (plural ōpiliōnēs) herdsman, in post-classical Latin also used to denote these animals from ovis sheep + a second element of uncertain origin) + -id. Compare scientific Latin Opilionides, former family name, and Opilionidae, current family name.