thalamencephalon (thalamensefalon)

[NL., icle cio us or arenaceous particles: thus equivalent thalamus (thala-mus), n.; pl. thalami (-mi). to and conterminous with Foraminifera. [NL., also thalamos; The thalamos in Asiatic temples. C. O. Müller , Manual of Archæol. (trans.), § 288. The walls of quarry-stones bonded with clay were similar to walls which were "found by many hundreds in all the five prehistoric cities of Troy, in the treasuries of Mycense, in the thalamos of Orc home nos," etc. Applet on's Ann. Cyc., 1886, p. 34. 2. In an at.: (at) The apparent origin of a cranial nerve; the place where a nerve emerges from or leaves the brain. (b) Specifically, the optic thalamus; the thalamus of the optic nerve; the great posterior ganglion of the cerebrum, forming the lateral wall of the cerebral ventricle, and connected with its fellow by the middle commi ure of the brain. See cut under cerebral.-3. In bot.: (a) The receptacle or torus. (b) Same as thallus. - Anterior, inferior, internal, and posterior peduncles of the thalamus. See peduncle. - Nucleus extern us thalami. See nucleus. - Thalamus nervi optic i, or thalamus optic us, the optic thalamus. See def. 2 (b). Thalarctos (tha-lärk'tos), n. [NL., irreg. for Thala arctos.] Same as Thala arctos. Thala arachna (thā-las-a-rak'ni), n. [NL. (Packard, 1871), the optic tracts and chiasma, the infundibulum and cerebral part of the pituitary body, the corpora albicantia, the conarium, the ependymal part of the velum inter pos i tum, a lamina cinerea, and other structures. Also called di encephalon, interbrain, ' tween - brain. See cuts nder Elasmobranch i i, encephalon, Rana, Petro myzontidæ, and cerebral.