1. Home
2. Idioms
3. thin out

thin out

---

---

thin out

to spread out; to become less dense. The trees began to thin out as we got higher up the mountain. The crowd began to thin out as we got a little farther from the theater.

See also: out, thin

thin something out

to make something less dense; to scatter something. You will have to thin the young plants out, because there is not room for all of them. Can you thin out these young plants?

See also: out, thin

thin out

v.

1. To make something less dense or concentrated: A harsh winter thinned out the herd of deer. The chef thinned the sauce out with water.

2. To become less dense or concentrated: The air thinned out as we climbed up the mountain.

See also: out, thin