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 and 1.1 cm.

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

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.

Feb 18, 2026 · “The chin evolved largely by accident and not through direct selection, but as an evolutionary byproduct resulting from direct selection on other parts of the skull,” says study co …

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 …

Oct 23, 2025 · The chin is a familiar feature of the human face, serving as the defining point of the lower jaw. This bony prominence is a characteristic of human anatomy that sets Homo sapiens apart from …

to bring one's chin up to (a horizontal bar, from which one is hanging by the hands), by bending the elbows

Apr 1, 2026 · To dig into the murky origins of the human chin, we spoke to one of the study’s co-authors, Lauren Schroeder, a paleoanthropologist at the University of Toronto Mississauga.