Phalangoidea \Phal`an*goi"de*a\, n. pl. [NL., from Phalangium
the daddy longlegs (see {Phalangious}) + Gr. e'i^dos form.]
(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
trache[ae]. Called also {{Phalangides}}, {{Phalangidea}},
{{Phalangiida}}, and {{Opilionea}}.
[1913 Webster]