Jisho

×
Noun
1. secondary undulation; secondary oscillation
Wikipedia definition
2. Seiche"Seiche" is also a French term for a cuttlefish or Bobtail squid. A seiche is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, swimming pools, bays, harbors and seas. The key requirement for formation of a seiche is that the body of water be at least partially bounded, allowing the formation of the standing wave.
Read “Seiche” on English Wikipedia
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Read “Seiche” on DBpedia

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