With plural agreement: a subphylum or phylum of arthropods having unbranched (uniramous) limbs, comprising the insects and myriapods, and formerly (in Manton's original scheme) also the onychophorans.
Arthropod taxonomy is currently under review and Uniramia is being replaced by other taxa. In schemes that do not include crustaceans in the Mandibulata, the latter is effectively synonymous with Uniramia.
1970s. From scientific Latin Uniramia from classical Latin ūni- + rāmus branch + -ia.