testing slab (testing slab)

A plate of white glazed porcelain having cup-shaped depre ions, for the examination of liquids which give colored precipitates. testis (tes'tis), n.; pl. testes (-tēz). [L.] 1. A testicle.-2. Some rounded formation likened to a testicle: as, the testes of the brain. - Aberrant duct of the testis. See aberrant. - Mediastinum testis. See mediastinum. - Pia mater testis. Same as tu nica vasculosa. - Testis cerebri (the testicle of the brain), the post optic us; one of the posterior pair of the optic lobes or corpora quadrigemina. See quadrigeminous, 2.Testis muliebris, a woman's testicle-that is, the ovary. Galen.