Definition

The point in an orbit around the Moon where the orbiting object is closest to the Moon.

Example

The spacecraft reached perilune just before beginning its descent to the lunar surface.

Conversation

Did you know that the Moon has a point called the perilune?

Really? What does that mean exactly?

It's the part of its orbit where it’s closest to the Moon's surface.

That’s interesting! I never knew orbits had specific points like that.

Synonyms & Antonyms

Root Explanation

**Perilune** → It is formed from "peri-" (meaning around) and "luna" (from Latin, meaning moon). The word "perilune" refers to the point in an orbit that is closest to the moon, hence the idea of being around the moon.

Memory Tip

Think of 'peri-' meaning around and 'luna' meaning moon — this helps you remember that perilune refers to the point closest to the moon.

Visually Confused Words