1. A usually short journey made for pleasure; an outing.
2. A roundtrip in a passenger vehicle at a special low fare.
3. A group taking a short pleasure trip together.
4. A diversion or deviation from a main topic; a digression.
a. A movement from and back to a mean position or axis in an oscillating or alternating motion.
b. The distance traversed in such a movement.
[Latin excursiō, excursiōn-, from excursus, past participle of excurrere, to run out : ex-, ex- + currere, to run; see kers- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.