plural noun
Sym·​phy·​la | \ˈsim(p)fələ\

Definition of Symphyla 

: a small class of minute progoneate arthropods that with the exception of the garden centipede are rarely seen and of no economic importance

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History and Etymology for Symphyla

New Latin, from syn- + Greek phylē kind, species, tribe; from their combining characteristics of both insects and myriopods

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