CHADDOCK'S SIGN
\t͡ʃˈadəks sˈa͡ɪn], \tʃˈadəks sˈaɪn], \tʃ_ˈa_d_ə_k_s s_ˈaɪ_n]\
Word of the day
Tetraneumona
- A division of Arachnida including those spiders which have four lungs, or pulmonary sacs. It includes the bird spiders (Mygale) and trapdoor spiders. See Mygale.