[1825–35; ‹ L calyci- (s. of calyxcalyx) + -form]This word is first recorded in the period 1825–35. Other words that entered Englishat around the same time include: breakdown, electrolyte, panda, runway, torque-form is a combining form meaning “having the form of”. Other words that use the affix-form include: arcform, cuneiform, iodoform, moniliform, tectiform