🇬🇧🇨🇳 density - 密度 : English Lesson

Meaning of "density" ("密度"), detailed definition, and a short video lesson below.

Density tells us how tightly stuff is packed into a space. If a lot of mass (like weight or “stuff”) is squeezed into a small space, it has high density, like a heavy rock. If only a little bit of mass is spread out in a big space, it has low density, like a fluffy cloud.

Watch and listen to this English flashcard to understand the word in more detail, with an easy example sentence.

The density of my backpack is so high that when I drop it, the floor says, "Oof."

My sandwich had a low density of vegetables and a very suspiciously high density of cheese and regret.

The cookie jar’s density of cookies dropped to zero the moment I was left alone with it for five minutes.

My thoughts have a high density of snack ideas and a very low density of plans to clean my room.

Earth’s density is high enough that gravity keeps us stuck here—but not high enough to stop my little brother from bouncing off the couch like a maniac.

At the pond, Anna held a stone and a sponge. She said the stone had high density as it sank, and the sponge had low density as it floated. She pressed the stone, felt its density in her hand, then squeezed the sponge to see low density. She laughed, learning density by touch.

This word is at the C1 level, which means it’s part of advanced English. It’s used in sophisticated conversations, professional settings, and academic discussions. Words at this level help you express yourself fluently and precisely in nuanced situations.

Expanding your English vocabulary is one of the best ways to improve your pronunciation, spelling, and confidence in English. Watch the video above to memorize the word, understand its meaning, and see example sentences in action. Discover related words to grow your vocabulary naturally. Add words to your playlist for stress-free, effective learning—anytime, anywhere! Watch, learn, repeat.