tide

Reading level: hard

Estimated CEFR level: B1 — Intermediate

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun the periodic rise and fall of the sea level under the gravitational pull of the moon
  2. noun something that may increase or decrease (like the tides of the sea)
  3. noun there are usually two high and two low tides each day

Etymology

Inherited from Middle English tyde, from Old English tīd, from Proto-West Germanic *tīdi, from Proto-Germanic *tīdiz, from Proto-Indo-European *déh₂itis, from *deh₂y- + *-tis. Related to time.

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