basilar impression

impression

 [im-presh´un]

1. a slight indentation or depression, as one produced in the surface of one organ by pressure exerted by another.

2. a negative imprint of an object made in some plastic material that later solidifies.

3. an effect produced upon the mind, body, or senses by some external stimulus or agent.

basilar impression

1. platybasia.

2. basilar invagination.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

bas·i·lar im·pres·sion

an invagination of the base of the skull into the posterior fossa with compression of the brainstem and cerebellar structures into the foramen magnum. Compare: platybasia.

Farlex Partner Medical Dictionary © Farlex 2012

bas·i·lar im·pres·sion

(basi-lăr impreshŭn)

Invagination of the base of the skull into the posterior fossa with compression of brainstem and cerebellar structures into the foramen magnum.

Medical Dictionary for the Dental Professions © Farlex 2012