sce·nar·i·o (sĭ-nârē-ō′, -när-, -năr-)
n. pl. sce·nar·i·os
1. An expected or supposed situation or sequence of events: "It was almost impossible to conceive a scenario in which he would fail to qualify for at least three Olympic events" (Jeremy Schaap).
2. An outline of the plot of a dramatic or literary work.
a. An outline or treatment for a screenplay.
b. A screenplay.
[Italian, scenery, plot outline, from scena, scene, from Latin scaena; see SCENE.]
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.