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.
A proceduralplan, usually but not necessarily tabular in nature, indicating a sequence of operations and the planned times at which those operations are to occur. [from 19th c.]
(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. [from 15th c.]
schedule of tribes
(US,law, often capitalized) One of the five divisions into which controlled substances are classified, or the restrictions denoted by such classification. [from 20th c.]
Heroin is a Schedule I drug with a high potential for abuse.
2022 October 13, Shawn Radcliffe, “What Happens if Marijuana is No Longer Classified as Schedule 1 Drug?”, in healthline[3]:
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.
(computer science) An allocation or ordering of a set of tasks on one or several resources. [from 20th c.]
(obsolete) A slip of paper; a short note. [14th–17th c.]
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:
He demands the blood-written schedule back from the demon, who refuses to give it up
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
^ Grandgent, C. H. (1899) “From Franklin to Lowell”, in James W. Bright, editor, Proceedings of the Modern Language Association[2], volume 14, number 2, Modern Language Association of America, →DOI, page 238