(grammar) A pronoun that is inserted into a subordinate clause to refer to the antecedent of the relative pronoun, often converting the subordinate clause into a clause that can stand on its own as a sentence.

(anatomy) Either of the two bony processes of a vertebra that project laterally from the neural arch at the junction of a pedicle and lamina and that provide attachment for muscles and ligaments concerned especially with rotation, lateral flexion, and stability of the spinal column.

(anatomy) A bony ridge or raised thickened border of the upper or lower jaw that contains the sockets of the teeth.

(anatomy) Each of a pair of projections extending downward from each side of the sphenoid bone in humans and other mammals.

plural of graphics processing unit

(computer hardware) A specialized electronic circuit designed to accelerate the creation of images in a frame buffer intended for output to a display device.

(anatomy) Synonym of dens.

(Internet slang, derogatory) Women's-style glasses (prescription or not) that are interpreted as signaling a prissy demeanor, especially ones that point upwards and outwards or have colorful frames.

(UK) Synonym of agony column

(anatomy) Any of the vascular folds on the inner surface of the ciliary body that produce the aqueous humor and between which pass the zonule of Zinn joining the ciliary muscle to the lens.