English
integraph
Blend of integral + graph.
Proto-Indo-European *n̥-th₂g-ró-s
Proto-Italic *n̥tagros ‘untouched’
Latin integer ‘entire’
Medieval Latin integrālis
Middle French integral ‘integral, necessary to the function of the whole’
English integral
Today it means
noun A device that determines the value of an integral by measuring the area under a curve (and drawing the curve of its integral)
Language periods are conventional ranges, not dates for this word.
Etymograph / integraph