Process

(pros' -es). I. A more or le well-defined outgrowth or projecting structure. 2. Method; phenomenon; occurrence. P., A, B, C. See Sewage , Disposal of. P., Acromion. See Acromion . P., Alar, one of the small wing-like proce es of the crista gall i which surround the foramen caecum. P., Alveolar, the thick border of the upper or lower jaw containing the sockets for the teeth. P., Ankyroid. Synonym of P. Coracoid. P., Anterior Clinoid. See P., Clinoid. P., Apex, P., Apical, the large proce extending from the apex of the pyramidal cells of the cerebral cortex toward the free surface of the cortex. P., Articular, the small proce es projecting from the upper and lower surfaces of the vertebrae, by means of which adjacent vertebrae articulate with each other. P., Auditory, the curved plate of bone surrounding the external auditory meatus for the greater part of its circumference, and serving for the attachment of the cartilage of the external ear. P., Axis. Synonym of P., Axis-cylinder. P., Axis-cylinder, that proce of a nerve-cell which becomes the axis-cylinder of a nerve. P., Basilar (of the Occipital Bone), the quadrilateral plate of bone in front of the foramen magnum articulating with the sphenoid bone. P., Calcarine. Synonym of Hippocampus minor. P., Central Base, the axis cylinder proce arising from the central part of the base of the pyramidal cells of the brain-cortex. Ps., Ciliary, plaitings and foldings of the layers of the choroid at its anterior margin. They are received between corresponding foldings of the suspensory ligament of the lens, and are from 60 to 80 in number. Ps., Ciliary (of the Retina), the anterior part of the retina, in close contact with the choroidal ciliary proce es. Ps., Clinoid, projections on the body and le er wings of the sphenoid bone. There are three: the anterior is formed by the inner extremity of the le er wings; the middle, a small eminence, one on each side, bounding the pituitary fo a or sella turcica anteriorly; the posterior, a tubercle on each side of the dorsum sellse. P., Cochleariform. See Proce us cochlea r if or mis. P., Condylar, P., Condyloid, the posterior proce of the lower jaw, consisting of the articular condyle and the neck which supports it. P., Conoid, the tuberosity of the clavicle. P., Coracoid, the hook-like proce projecting from the scapula above the glenoid cavity. See Coracoid . P. Coronoid: 1.