[1885–90; sphygmo- + -gram1]This word is first recorded in the period 1885–90. Other words that entered Englishat around the same time include: classified, foregut, scrum, twofer, zoom-gram is a combining form occurring in loanwords from Greek, where it meant “somethingwritten,” “drawing” (epigram; diagram). On this model, -gram is used in the formation of compound words (oscillogram)