Definition

The increase in volume of a granular material when its shape changes, often due to the particles moving further apart, or the way a thick liquid becomes solid under pressure.

Example

The dilatancy of the sand was evident when it expanded as pressure was applied.

Conversation

Have you ever heard of the term dilatancy?

No, I haven't! What does it mean?

It's about how certain substances change volume under pressure, like when you squeeze a gel.

That sounds interesting! I didn't know materials could behave that way.

Synonyms & Antonyms

Root Explanation

Dilatancy → It is formed from "dilatare" (Latin, meaning to spread out or expand) and the suffix "-cy" (meaning the state or condition of). The word "dilatancy" refers to the state of being able to expand or spread out, particularly in relation to materials that increase in volume when subjected to stress.

Memory Tip

Think of 'spreading out' ('dilatare') to remember that 'dilatancy' means the condition of expanding or increasing in volume.

Visually Confused Words