pselaphognathZool.|ps-, ˈsiːləfəʊˌgnæθ| [f.mod.L. Psēlaphognatha neut. pl., f.Gr. ψηλαϕᾱν to grope about + γνάθος jaw.] A member of the Pselaphognatha, a division of diplopod Myriapoda, having the second pair of jaws pediform. So pselaphognathous|-ˈfɒgnəθəs|a., belonging to this division.