Definition
The prefix "semi" means "half" or "partly." Think of it as cutting something in two, but not always perfectly. A semicircle is half a circle π, and a semicolon (;) is kind of like a half-stop in punctuation. It can also mean "twice a" like bi-weekly. Understanding "semi" helps you decipher other words. It's like having a secret code to unlock meanings. It often shows something is incomplete or only partially there.