Etymology

tegmental

T1E1G2M3E1N1T1A1L1

Today it means: Of or pertaining to tegmentum, or the ventral portion of the mesencephalon. Full definition →

Proto-Indo-European *h₂élisder.? ← English tegmentum
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The story

  1. Englishtegmentum
  2. Proto-Indo-European*h₂el-
  3. Proto-Indo-European*h₂élisder.?
  4. English todaytegmental

From tegmentum + -al.

Etymology from Wiktionary, CC BY-SA 4.0.