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Topic: OCEANOGRAPHY

Language: Old English
Origin: ebba

ebb

1 noun
     
ebb1
1 [singular] also ebb tideHEO the flow of the sea away from the shore, when the tide goes out [≠ flood tide]
2

be at a low ebb

to be in a bad state or condition:
His confidence is at a low ebb.
3

ebb and flow

a situation or state in which something increases and decreases in a kind of pattern:
the ebb and flow of the conversation
the ebb and flow of passengers in the station
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