Singulative number

Okay, imagine you have a bunch of toys. You might have lots of toy cars, but you might only have one toy plane. You can use the word "plane" to talk about all planes, but sometimes you might want to talk about just one plane. When you use the word "plane" to talk about just one plane, that's called the singulative number. It's like the singular version of a word.

Let's say you have a bunch of apples. You might have five apples, but if you just want to talk about one apple, you can use the word "apple" to mean one. That's the singulative form of "apples". So instead of saying "I have five apples," you could say "I have one apple."

The singulative form of a word is useful when you want to talk about just one thing instead of all things of that type. It's like using a microscope to look at something really closely instead of looking at the whole thing.