Etymology

sub-zero

Today it means: below 0°C; freezing cold Full definition →

English zero ← Latin sub-
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The story

  1. Latinsub
  2. Latinsub-
  3. Englishsub-
  4. Englishzero
  5. English todaysub-zero

From sub- + zero.

Etymology from Wiktionary, CC BY-SA 4.0.