The tegmentum (from Latin for `covering`) is a general area within the brainstem. It is located between the ventricular system and distinctive basal or ventral structures at each level. It forms the floor of the midbrain whereas the tectum forms the ceiling. It is a multisynaptic network of neurons that is involved in many unconscious homeostati.....
• (n.) A covering; -- applied especially to the bundles of longitudinal fibers in the upper part of the crura of the cerebrum.
(from the article `nervous system, human`) The pons (metencephalon) consists of two parts: the tegmentum, a phylogenetically older part that contains the reticular formation, and the pontine ...
(tәg-men´tәm) Latin word meaning a covering. It is often used alone to refer to the tegmentum mesencephali. adj., tegmen´tal., adj. tegmentum mesencephali , tegmentum of mesencephalon the posterior part of the mesencephalon, formed by continuation of ...
Teg·men'tum noun ; plural Tegmenta . [ Latin , a covering.] (Anat.) A covering; -- applied especially to the bundles of longitudinal fibers in the upper part of the crura of the cerebrum. 
Type: Term Pronunciation: teg-men′tŭm, -tă Definitions: 1. A covering structure. Synonyms: mesencephalic tegmentum
Latin = covering.
ventral part of the midbrain (mesencephalon)
Floor of the midbrain.