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.

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.

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 …

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 …

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 15, 2026 · Turns out there isn’t. When researchers analyzed craniofacial evolution across hominins, the chin didn’t show strong signs of being directly selected for survival.

ch'in (chin; Chin. chēn), n. Music and Dance a Chinese zither consisting of an oblong, slightly curved wooden box over which are stretched strings that are stopped with one hand and plucked with the …

Feb 12, 2026 · But the evolutionary journey of Homo sapiens likely didn’t alter its trajectory thanks to the chin. If anything, we simply picked it up on our way to our final biological destination.