tonofilament

T1O1N1O1F4I1L1A1M3E1N1T1

noun

A structural filament of keratin present in the cytoplasm

OriginEnglish filament ← Medieval Latin fīlāmentum ← Late Latin fīlō →
Scrabble 17
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Meanings

nountonofilament (plural tonofilaments)

plural tonofilaments

  1. biochemistryA structural filament of keratin present in the cytoplasm

Origin

  1. Proto-Indo-European*ten-
  2. Proto-Indo-European*tónos
  3. Proto-Hellenic*tónos
  4. Ancient Greekτόνος (tónos)
  5. Englishtono-
  6. Proto-Indo-European*gʷʰiH-(s-)lo-
  7. Proto-Italic*fī(s)lom
  8. Latinfīlum
  9. Late Latinfīlō
  10. Medieval Latinfīlāmentum
  11. Englishfilament
  12. Englishtonofilament

From tono- + filament.

Full word history & related roots →
Cite this entry
APA

tonofilament. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/tonofilament

MLA

“tonofilament.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tonofilament. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “tonofilament,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/tonofilament.

Source: tonofilament on Wiktionary, CC BY-SA 4.0.