[1650–60; quadri- + syllable]This word is first recorded in the period 1650–60. Other words that entered Englishat around the same time include: gas, oscillation, parade, profile, siphonquadri- is a combining form meaning “four,” used in the formation of compound words. Otherwords that use the affix quadri- include: quadraphonic, quadraphony, quadriad, quadricycle, quadriplegia