Er·ics·son(ĕr′ĭk-sən), John 1803-1889.
Swedish-born American engineer and inventor who designed an innovative gunboat for the US Navy, the Monitor, which engaged the Confederate Virginia in the first battle between ironclad vessels (1862).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.