3. Logic The middle term in a syllogism. 4. means(used with a sing. or pl. verb) A method, a course of action, or an instrument by which an act can be accomplished or an end achieved. 5. means(used with a pl.
An anatomical term, the supraorbital ridge refers to the ridge of bone above each eye. This ridge differs between species, and also tends to look different between genders. They act as part of the structural strength of the skull, among other functions. Human eyes are located within indentations in the skull.
Sagittal keel. The Sagittal keel (torus) is a thickening of bone on part or all of the midline of the frontal bone, or parietal bones where they meet along the sagittal suture, or on both bones. Sagittal keels differ from sagittal crests, which are found in some earlier hominins (notably the genus Paranthropus) and in a range of other mammals.