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estuary

Pronunciation: /ˈɛstjʊ(ə)ri/
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Definition of estuary

noun (plural estuaries)

  • the tidal mouth of a large river, where the tide meets the stream.

Derivatives

estuarial

adjective

estuarine

Pronunciation: /-rʌɪn/
adjective

Origin:

mid 16th century (denoting a tidal inlet of any size): from Latin aestuarium 'tidal part of a shore', from aestus 'tide'

Spelling help

Remember that estuary has -tua- in the middle.

Spelling rule

Make the plural of words that end in a consonant plus -y by changing the -y to -ies: (estuaries).

estuary in other Oxford dictionaries

Definition of estuary in the US English dictionary