tec·​tum | \ ˈtek-təm How to pronounce tectum (audio) \
plural tecta\ ˈtek-​tə How to pronounce tecta (audio) \

Definition of tectum

: a bodily structure resembling or serving as a roof especially : the dorsal part of the midbrain

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Other Words from tectum

tectal \ ˈtek-​tᵊl How to pronounce tectal (audio) \ adjective

Examples of tectum in a Sentence

Recent Examples on the Web The researchers also recorded activity from the ocular tectum, a brain area involved in basic visual processing in owls and many other vertebrates. Joanna Klein, New York Times, "Owls See the World Much Like We Do," 3 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tectum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of tectum

circa 1905, in the meaning defined above

History and Etymology for tectum

New Latin, from Latin, roof, dwelling, from neuter of tectus, past participle of tegere to cover — more at thatch

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Time Traveler for tectum

Time Traveler

The first known use of tectum was circa 1905

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Cite this Entry

“Tectum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tectum. Accessed 14 Aug. 2020.

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More Definitions for tectum


tec·​tum | \ ˈtek-təm How to pronounce tectum (audio) \
plural tecta\ -​tə How to pronounce tecta (audio) \

Medical Definition of tectum

1 : a bodily structure resembling or serving as a roof
2 : the dorsal part of the midbrain including the corpora quadrigemina

called also tectum mesencephali

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