Etymograph

English

tectum

Tectum comes from Latin tēctum ‘roof’, from tegō ‘to cover’, and ultimately from Proto-Indo-European *(s)teg-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*(s)teg-1‘to cover’reconstructed
  2. Proto-Italicc. 1500–700 BCE*tegō1‘to cover’reconstructed
  3. Latinc. 75 BCE–200 CEtegō1‘to cover’
  4. Latinc. 75 BCE–200 CEtēctum1‘roof’
  5. Englishtodaytectum1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English tectum

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*(s)teg-Wiktionary, English tectum‘to cover’reconstructed
  2. Proto-Italicc. 1500–700 BCE*tegōWiktionary, English tectum‘to cover’reconstructed
  3. Latinc. 75 BCE–200 CEtegōWiktionary, English tectum‘to cover’
  4. Latinc. 75 BCE–200 CEtēctumWiktionary, English tectum‘roof’
  5. EnglishtodaytectumWiktionary, English tectum

Linked words

through Proto-Indo-European *(s)teg- ‘to cover’

tile, thug, sauna, thatch, staccato, toque, 26 more

through Latin tegō ‘to cover’

detective, detection, detect, toga, 9 more

Today it means

noun The dorsal portion of the midbrain of vertebrates; in mammals, containing the superior colliculus and inferior colliculus

Sources

Sources: Wiktionary, “tectum”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *(s)teg- / tectum

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