American English
/si/
One syllable.
a large area of salty water, usually smaller than an ocean and partly surrounded by land
Practice out louda large area of salty water, usually smaller than an ocean and partly surrounded by land
We swam in the sea after lunch.
Small boats crossed the sea to the island.
In names, use a capital letter: the Red Sea. In ordinary use, write sea with a small letter.
rough seas · calm sea · open sea · sea life
the sea is + adjective
[verb] in the sea
a very large amount or number of something spread over a wide area
A sea of fans filled the stadium.
We saw a sea of red umbrellas in the square.
a sea of + plural noun
the average height of the ocean's surface, used as a point of measurement
The airport is 30 meters above sea level.
traveling by boat or ship
We traveled to the island by sea.
confused and unsure what to do
I felt at sea in my first week at work.