n. pl. sche·ma·ta (skē-mätə, skĭ-mătə) or sche·mas
1. A plan, outline, or model: a schema for prioritizing vaccinations; a writer's schema for a novel.
2. Psychology A pattern imposed on complex reality or experience to assist in explaining it, mediate perception, or guide response.
[Latin schēma, schēmat-, form; see SCHEME.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.