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Definition of Tectum
1. Noun. The dorsal portion of the midbrain, containing the superior colliculus and inferior colliculus ¹
2. Noun. The interconnected outer surface of a spore. ¹
3. Noun. Noodle like panels for ceilings to dull echoes in large rooms. ¹
¹ Source: wiktionary.com
Definition of Tectum
1. a rooflike structure [n -TUMS or -TA]
Medical Definition of Tectum
1. Any rooflike covering or structure. Origin: L. Roof, roofed structure, fr. Tego, pp. Tectus, to cover (05 Mar 2000)