Mainstream, main stream, mainstem, or main stem??? The Supreme Court commonly used mainstream in its 1963 AZ v CA decision – Now Merriam-Webster appears to have taken the word away from rivers. @jfleck and I use main stem in Science Be Dammed UofAZ Press Fall19
— Richard Eric Kuhn (@R_EricKuhn) April 15, 2019
It’s a fascinating reminder of the way the words of water are everywhere, carrying their separate linguistic cargo. And, thanks to the modern technology of search-and-replace, it is a problem easily solved.