Phal·an·goi·de·a n. pl. Zool. A division of Arachnoidea, including the daddy longlegs or harvestman (Phalangium) and many similar kinds. They have long, slender, many-jointed legs; usually a rounded, segmented abdomen; and chelate jaws. They breathe by tracheæ. Called also {Phalangides}, {Phalangidea}, {Phalangiida}, and {Opilionea}.
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