WordReference Random House Unabridged Dictionary of American English © 2025
tec•tum  (tek′təm),USA pronunciation n., pl. -tums, -ta (-tə).USA pronunciation [Anat., Zool.]
  1. Anatomy, Zoologya rooflike structure.
  • Neo-Latin, Latin tēctum roof, special use of neuter of tēctus, past participle of tegere to cover; compare protect
  • 1900–05;
tec′tal, tec•to•ri•al  (tek tôr′ē əl, -tōr′-),USA pronunciation adj. 
'tectum' also found in these entries (note: many are not synonyms or translations):
tectiform

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