Schedule
late Middle English (in the sense ‘scroll, explanatory note, appendix’): from Old French cedule, from late Latin schedula ‘slip of paper’, diminutive of scheda, from Greek skhedē ‘papyrus leaf’. The verb dates from the mid 19th century.
wiktionary
From Old French cedule (whence French cédule), from Late Latin schedula(“papyrus strip”), diminutive of Latin scheda, from Ancient Greek σχέδη(skhédē, “papyrus leaf”). Doublet of cedula and cedule.
etymonline
schedule (n.)
late 14c., sedule, cedule "ticket, label, slip of paper with writing on it," from Old French cedule (Modern French cédule), from Late Latin schedula "strip of paper" (in Medieval Latin also "a note, schedule"), diminutive of Latin scheda, scida "one of the strips forming a papyrus sheet," from Greek skhida "splinter," from stem of skhizein "to cleave, split" (see shed (v.)). Also from the Latin word are Spanish cédula, German Zettel.
The notion is of slips of paper attached to a document as an appendix (a sense maintained in U.S. tax forms). The specific meaning "printed timetable" is first recorded 1863 in railway use. Modern spelling is a 15c. imitation of Latin, but pronunciation remained "sed-yul" for centuries afterward; the modern British pronunciation ("shed-yul") is from French influence, while the U.S. pronunciation ("sked-yul") is from the practice of Webster, based on the Greek original.
schedule (v.)
"make a schedule of, 1855; include in a schedule, 1862; from schedule (n.). Related: Scheduled; scheduling.
