noun, plural ten·to·ri·a [ten-tawr-ee-uh, –tohr-] /tɛnˈtɔr i ə, -ˈtoʊr-/.
- Anatomy. an extension of one of the membranes covering the cerebrum which, with the transverse fissure, separates the cerebrum from the cerebellum.
- Zoology. (of an insect) the internal skeleton of the head.
n. pl. ten•to•ri•a (-tôr′ē-ə)
- A membranous cover or horizontal partition.