The word 'steno' is a 20th-century American English clipping of the longer term 'stenographer'. 'Stenographer' itself derives from the Greek elements 'stenos' (στενός), meaning 'narrow', and 'graphein' (γράφειν), meaning 'to write'. The semantic logic connects the concept of 'narrow writing'—compressing speech into a concise, abbreviated script—to the modern professional who performs this task. Thus, the clipped form 'steno' directly inherits this association, referring both to the practitioner and the system of shorthand itself.

This word is a loanword and a clipping, not productively formed from separable English morphemes. It originates from the Greek-derived combining form 'steno-', meaning 'narrow'.