Etymology

nanometre

na·no·me·tre
N1A1N1O1M3E1T1R1E1

Today it means: An SI subunit of length equal to 10⁻⁹ metres. Full definition →

English metre ← Latin nānus ← Ancient Greek νᾶνος (nânos)
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The story

  1. Ancient Greekνᾶνος (nânos)
  2. Latinnānus
  3. Englishnano-
  4. Englishmetre
  5. English todaynanometre

From nano- + metre.

Etymology from Wiktionary, CC BY-SA 4.0.