time code meaning in Information Science terminology / glossary / dictionary is:
An electronic synchronizing system standardized by the Society of Motion Picture and Television Engineers (SMPTE) that was originally used in video editing but is now also used to mark motion picturefilm and sound tape with a series of pulses from which a continuous readout of elapsed hours, minutes, and seconds is generated. The code is also used to document individual frame numbers and to record additional information, such as scene, take, camera, and roll number. Employed in production to synchronize picture and sound, shots from multiple cameras, and multiple sound tracks, the code also facilitates electronic editing. Synonymous with SMPTE code.