Dictionary

zygomatic bone See zygoma.

zygomatic arch See zygoma.

zygoma The bone that forms the prominence of the cheek. Also known as zygomatic bone, zygomatic arch, malar bone, and yoke bone.

zoophilia A sexual disorder (paraphilia) that involves an abnormal desire to have sexual contact with animals. See also paraphilia.

zooparasite A living parasite, such as a worm or protozoa.

horizontal Parallel to the floor; a plane that passes through the standing body parallel to the floor.

dorsal The back, as opposed to ventral.

distal Farther from the beginning, as opposed to proximal.

deep Away from the exterior surface or farther into the body, as opposed to superficial.

cranial Toward the head, as opposed to caudad.

caudad Toward the feet (or tail, in embryology), as opposed to cranial.

anteroposterior From front to back, as opposed to posteroanterior. Abbreviated AP. For example, when a chest X-ray is taken with the patient’s back against the film plate and the X-ray machine in front of the patient, it is referred to as an AP view.