Etymology

intrafusal

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Today it means: Relating to the striated fibres within a muscle spindle Full definition →

English fusal ← Latin intrā ← Proto-Indo-European *h₁énteros
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The story

  1. Proto-Indo-European*h₁én
  2. Proto-Indo-European*h₁énteros
  3. Latin*interus
  4. Latinintrā
  5. Englishintra-
  6. Englishfusal
  7. English todayintrafusal

From intra- + fusal.

Etymology from Wiktionary, CC BY-SA 4.0.