schedule

Etymology

From Old French cedule (whence French cédule), from Late Latin schedula (“papyrus strip”), diminutive of Latin scheda, from Ancient Greek σχέδη (skhédē, “papyrus leaf”), from Proto-Hellenic *skʰíďďō, from Proto-Indo-European *skid-yé-ti, from *skeyd- (“to divide, split”). Doublet of cedula and cedule. This word was historically pronounced /ˈsɛdjuːl/, /ˈsɛdʒuːl/; the pronunciations with /ʃ/ and /sk/ are due to the spelling (the latter may have been reinforced by learned influence); compare schism.

noun

1. (obsolete) A slip of paper; a short note.
   He demands the blood-written schedule back from the demon, who refuses to give it up 1900, John the Stylite, translated by Agnes Smith Lewis, Select Narratives of Holy Women (Studia Sinaitica; X), Logos edition, London, Cambridge University Press Warehouse: C. J. Clay and Sons, page xxix
2. (law) A written or printed table of information, often forming an annex or appendix to a statute or other regulatory instrument, or to a legal contract.
   schedule of tribes
   1. (US, law, often capitalized) One of the five divisions into which controlled substances are classified, or the restrictions denoted by such classification.
      a Schedule I drug with a high potential for abuse
      Currently, cannabis/marijuana is classified as a Schedule I drug, meaning it defined as having “no currently accepted medical use and a high potential for abuse.” This is the same designation given to LSD, heroin and ecstasy. 2022-10-13, Shawn Radcliffe, “What Happens if Marijuana is No Longer Classified as Schedule 1 Drug?”, in healthline
3. A serial record of items, systematically arranged.
4. A procedural plan, usually but not necessarily tabular in nature, indicating a sequence of operations and the planned times at which those operations are to occur.
   stick to the schedule
   we're running behind schedule
   things are happening ahead of schedule
5. (computer science) An allocation or ordering of a set of tasks on one or several resources.

verb

1. To create a time-schedule.
2. To plan an activity at a specific date or time in the future.
   I'll schedule you for three-o'clock then.
   The next elections are scheduled on the twentieth of November.
3. To add a name to the list of people who are participating in something.
   I am scheduled for classes next month.
4. (Australia, medicine) To admit (a person) to hospital as an involuntary patient under a schedule of the applicable mental health law.
   whether or not to schedule a patient
5. (US) To classify as a controlled substance.
   Many harm reduction groups and drug policy experts question the long-term efficacy of scheduling xylazine. 2023-04-20, Jan Hoffman, “The Fight Over a Drug That Is Great for Horses but Horrific for Humans”, in The New York Times, →ISSN