Definition: The act or process of expanding.

Alright class, settle down, let’s take a look! You’ve got the dictionary – excellent work, it’s true! – It tells us “expansion,” what does that really do? Let's break it down, nice and slow, Expansion means to grow , you know! Think of a balloon, filled with air so light, It puffs itself out, a wonderful sight. That’s expansion – getting bigger, see? Like stretching outwards, wild and free! Or maybe a plant, pushing roots down deep, Reaching for sunlight, secrets to keep. It expands its leaves, reaching high above, Expansion shows us growth and love! So, "The act or process of expanding," you’ve got the key, It's about increasing – that’s what it means to be! Do you have any questions? Don't hesitate to ask, Let's explore this concept, before we move on fast!