'manometric' originates from the Greek word 'manos,' meaning 'thin' or 'sparse,' and 'metron,' meaning 'measure.'

'manos' and 'metron' combined to form the French word 'manomètre,' which eventually became the modern English word 'manometer,' leading to the adjective 'manometric.'

Initially, it referred to the measurement of thin or sparse substances, but over time it evolved to specifically refer to pressure measurement.