kʷetwr̥-plo-

“fourfold, quadrupled”

Widely acceptedquantitymultiplication

quadruple, quarter, squad

Compound yielding Latin quadrus, English quadruple, quarter, squad, squadron.

dwi-plo-“twofold, doubled”h₁oyn-ḱo-“one time, single instance”h₁weh₂-ḱ-“empty, void, vacant”h₂el-is-“beyond, more, enough”h₂el-no-“all, entire, whole”h₂el-tero-“one of two, the other”h₂embʰo-“both, the two together”h₂ey-kʷo-“each one, every”