3 days ago · The bony facial protrusion might be an evolutionary byproduct that resulted from changes to other parts of the skull, according to a new study

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.

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 …

3 days ago · Dashiell Hammett mentioned Sam Spade’s jutting chin in the opening sentence of his novel “The Maltese Falcon.” Spade’s chin was among the facial features Hammett used to describe his …

6 days ago · Humans are the only primates with a chin, leaving biologists to wonder why we acquired this unique feature. According to a new analysis of head anatomy in apes, it probably didn’t evolve …

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.

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 …

An Evolutionary Accident Human faces wouldn't look complete without a chin, anatomically defined as a bony protrusion that extends from the lower jaw. Previous studies suggested that chins evolved ...