Tet`ra*pneu"mo*na (?), n. pl. [NL. See Tetra-, and Pneumo-.] Zool.
A division of Arachnida including those spiders which have four lungs, or pulmonary sacs. It includes the bird spiders (Mygale) and the trapdoor spiders. See Mygale.
© Webster 1913.
Editor's note. Originally noded under the misspelling Tetraneumona. - Gr.