Defined and undefined
Okay kiddo, let me explain what "defined" and "undefined" means.
When we talk about something being "defined," it means we have given it a clear and specific meaning. For example, if I say "a triangle has three sides," that's a defined statement. It means that we all agree what a triangle is and we know what it looks like.
On the other hand, something is "undefined" if we don't have a clear idea of what it means yet. For example, if I asked you what the word "flibbertigibbet" means, you might say "I don't know, it's undefined." That means we haven't figured out what it means yet.
Sometimes things can be partially defined. For example, if we say "a shape with four sides and four right angles," that's partially defined, but we don't know what kind of shape it is yet. That's okay - sometimes it takes time to fully understand something and define it completely.
When we talk about something being "defined," it means we have given it a clear and specific meaning. For example, if I say "a triangle has three sides," that's a defined statement. It means that we all agree what a triangle is and we know what it looks like.
On the other hand, something is "undefined" if we don't have a clear idea of what it means yet. For example, if I asked you what the word "flibbertigibbet" means, you might say "I don't know, it's undefined." That means we haven't figured out what it means yet.
Sometimes things can be partially defined. For example, if we say "a shape with four sides and four right angles," that's partially defined, but we don't know what kind of shape it is yet. That's okay - sometimes it takes time to fully understand something and define it completely.