That said, you will find—if you’ve a penchant for noticing these things, professionally or otherwise—that compounds have a tendency, over time, to spit out unnecessary hyphens and close themselves up. Over the course of my career I’ve seen “light bulb” evolve into “light-bulb” and then into “lightbulb,” “baby-sit” give way to “babysit,” and—a big one—“Web site” turn into “Web-site,” then, happily, “website.”
