How to use
countable usually singular, uncountable
the distance from the top surface of something such as a river or hole to the bottom of it
a sea with an average depth of 35 metres
to/at a depth of something
The cave descends to a depth of 340 feet.
Plant the beans at a depth of about six inches.
a metre/foot etc in depth
a channel of two feet in depth
the distance from the front to the back of an object
The depth of the shelves is about 35 cm.
how strong an emotion is or how serious a situation is
the depth of public feeling on this issue
People need to realize the depth of the problem.
the quality of having a lot of knowledge, understanding, or experience
depth of knowledge/understanding/experience
I was impressed by the depth of her knowledge.
a man of great depth and insight
She's quiet, but perhaps she has
when a lot of details about a subject are provided or considered
Network news coverage often lacks depth.
The subject was discussed
in great depth
be out of your depth
to be involved in a situation or activity that is too difficult for you to understand or deal with
I felt completely out of my depth at the meeting.
to be in water that is too deep for you to stand in
the depths of something
when a bad feeling or situation is at its worst level
in the depths of despair
The country was recovering from
the depths of recession
the depths of the ocean/countryside/forest etc
the part that is furthest away from people, and most difficult to reach
Astronomers may one day travel to the depths of space.
the depths of winter
the middle of winter, especially when it is very cold
the deepest parts of the sea
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
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