a·cross (ə-krôs, ə-krŏs)
1. On, at, or from the other side of: across the street.
2. So as to cross; through: drew lines across the paper.
3. From one side of to the other: a bridge across a river.
4. Into contact with: came across my old roommate.
1. From one side to the other: The footbridge swayed when I ran across.
2. On or to the opposite side: We came across by ferry.
3. Crosswise; crossed.
4. In such a manner as to be comprehensible, acceptable, or successful: put our idea across; get a message across.
Being in a crossed position: seated with arms across.
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.