Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “sea”

sea

noun uk   /siː/ us  
A1 [C or U] the salty water that covers a large part of the surface of the Earth, or a large area of salty water, smaller than an ocean, that is partly or completely surrounded by land: the Mediterranean Sea We went swimming in the sea. The sea was calm/smooth/choppy/rough when we crossed the Channel. The refugees were at sea (= in a boat on the sea a long way from land) for 40 days before reaching land. When we moved to the US, we sent our things by sea (= in a ship). We spent a week by the sea (= on the coast) this year. Soon we had left the river estuary and were heading towards the open sea (= the part of the sea a long way from land). a sea of sth a large amount or number of something: The teacher looked down and saw a sea of smiling faces. put (out) to sea (of a ship) to leave a port and start a journey: The boats will put (out) to sea on this evening's high tide. [C] one of the large, flat areas on the moon that in the past were thought to be seas
(Definition of sea from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of sea?
Add Cambridge dictionaries to your browser to your website

Definitions of “sea” in other dictionaries

Word of the Day

hello stranger

said to a person that you know but have not seen for a long time

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

silver splicer noun

November 17, 2014
informal a person who marries in later life Newly retired and now newlywed – rise of the ‘silver splicers’ Reaching pension age becomes a trigger to tie the knot as baby-boomers begin to redefine retirement

Read More