Definition

The quality or ability of a part of the body, especially a thumb, to be positioned opposite to the fingers, allowing for grasping and holding objects.

Example

The opposability of the human thumb is what allows us to grip tools effectively.

Conversation

Have you ever thought about the opposability of our thumbs?

Yeah, it's pretty cool how it helps us grip things better.

Exactly! It makes so many tasks easier and more efficient.

For sure, I can't imagine trying to do everything without that ability!

Synonyms & Antonyms

Root Explanation

Opposability is formed from "opponere" (meaning to place against) and the suffix "-ability" (meaning the quality of being able to). The term describes the quality of being able to place something against another, particularly in reference to the thumb's ability to touch the other fingers.

Memory Tip

Think of the ability to 'place against' ('opponere') — that's why opposability refers to the quality of being able to oppose or touch.

Visually Confused Words