The chin is the forward pointed part of the anterior mandible (mental region) below the lower lip. A fully developed human skull has a chin of between 0.7 cm (0.28 in) and 1.1 cm (0.43 in).

Definition of chin noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Oct 31, 2025 · While the general shape of your chin is typically determined by genetics, age and lifestyle can change its appearance. Read on to figure out what basic chin shape you have. From there, we'll …

5 days ago · The meaning of CHIN is the lower portion of the face lying below the lower lip and including the prominence of the lower jaw. How to use chin in a sentence.

Jan 24, 2026 · The chin is one of our most familiar features, yet scientists still debate why we evolved it. Here’s a breakdown of what we know about it so far.

Dec 31, 2024 · The chin provides structural support to the lower face and serves as an attachment site for muscles involved in facial expressions, speech, and chewing. Its shape and size contribute …

Feb 2, 2016 · The chin isn’t just the lower part of your face: It’s a specific term for that little piece of bone extending from the jaw. While it may seem odd, humans are in fact the only animals that have ...

Jun 24, 2026 · The chin is the lower part of the face, below the lower lip and including the prominence of the lower jaw. It is formed by the mental prominence, which is the bony projection at the front of the …

Aug 24, 2025 · The chin is the distinct, forward-projecting part of the human face located at the bottom of the lower jaw. It is a defining feature of modern humans, setting us apart from other primates and …

Jan 4, 2012 · Perhaps the most common explanation is that our chin helps buttress the jaw against certain mechanical stresses.