Definition

Made up of a type of rock called anorthosite, which is primarily composed of plagioclase feldspar.

Example

The moon's surface is largely anorthositic, giving it a unique appearance.

Conversation

Did you know that some rocks are classified as anorthositic?

Really? I haven't heard of that before. What does it mean?

It means they are mainly composed of a mineral called anorthosite.

That's interesting! I love learning about different types of rocks.

Synonyms & Antonyms

Root Explanation

Anorthositic is derived from "anorthosite" (from Greek "anorthos" meaning not straight or irregular, and "-ite" a suffix used in mineralogy to denote rocks or minerals). The term "anorthositic" refers to something pertaining to or resembling anorthosite, which is a type of rock composed predominantly of plagioclase feldspar.

Memory Tip

Think of 'not straight' ('anorthos') to remember that 'anorthositic' describes a type of rock that is irregular in composition.

Visually Confused Words