undersea
gb/ˌʌndɚsˈi/ us/ˌʌndɚsˈi/
B2
Anglais
Sens
0 sens
adjective
B2
property
1
located or happening under the sea
under the sea; underwater.
Schéma d’usage :
undersea [noun]
Erreur fréquente :
Often confused with overseas (meaning “in another country”). Also, learners may overuse the phrase under the sea where undersea works better before a noun (e.g., undersea cable).
Synonymes
underwater (More common and broader; can include lakes and rivers, not just the sea.)
|
submarine (Often used for ships, military contexts, or engineering; slightly more technical.)
Antonymes
surface (At or on the top of the sea, not below it.)
|
land-based (On land rather than in the sea.)
Collocations
undersea cable
|undersea tunnel
|undersea pipeline
|undersea volcano
|undersea earthquake
|undersea exploration
|undersea mining
|undersea habitat
|undersea mountains
|undersea research
Thèmes
nature
|science
|technology
|geography
Exemples
- Most international internet traffic travels through undersea cables.
- Engineers are planning an undersea tunnel to connect the two islands.
- Scientists mapped a chain of undersea volcanoes in the Pacific.
Exemples pédagogiques
- There is an undersea cable between the countries.
- We watched a documentary about undersea animals.
Nom
C1
entity
2
the underwater region of the sea
the world under the ocean surface.
Schéma d’usage :
the undersea
Erreur fréquente :
Usually used with the (the undersea); without the can sound unnatural in this meaning.
Synonymes
the underwater world (More descriptive and common in general writing.)
|
the ocean depths (Emphasizes great depth, not just being under the surface.)
Antonymes
the surface (The top layer of the sea, not below it.)
|
dry land (Land as opposed to the ocean environment.)
Collocations
life in the undersea
|the undersea world
|explore the undersea
|the undersea floor
|the undersea environment
|deep undersea
Thèmes
nature
|science
Exemples
- The film imagines strange creatures living in the undersea.
- New robots are helping researchers explore the undersea.
- Noise pollution can travel far through the undersea.
Exemples pédagogiques
- The undersea is full of fish.
- We can explore the undersea with robots.
Grammaire
Forme canonique
undersea
API
GB/ˌʌndɚsˈi/
US/ˌʌndɚsˈi/
Syllabes et accentuation
un - der - sea (3 syllabes)
Stress on 2nd syllable (der)
Formes du mot
Adjective
- Base: undersea
Expressions
undersea cable
1/ˌʌndɚsˈi kˈeɪbəl/
fixed phrase
technical
Cable laid on sea floor for communication or power
A long wire under the sea that carries internet, phone, or power between countries.
Exemples
- An undersea cable connects the two continents’ internet networks.
- Repairs to an undersea cable caused internet slowdowns.
undersea cable
1/ˌʌndɚsˈi kˈeɪbəl/
fixed phrase
cable laid on the seabed
a long cable under the ocean that carries signals.
Exemples
- The earthquake damaged an undersea cable, slowing internet service on the island.
- Most intercontinental data travels through undersea cables rather than satellites.
- Repair ships were sent to locate and fix the undersea cable.
undersea earthquake
1/ˌʌndɚsˈi ˈɚθkwˌeɪk/
fixed phrase
earthquake beneath the ocean
an earthquake that happens under the ocean.
Exemples
- A powerful undersea earthquake off the coast led to tsunami warnings.
- Sensors recorded an undersea earthquake deep beneath the trench.
- The undersea earthquake was felt as far away as the mainland.
undersea exploration
1/ˌʌndɚsˈi ˌɛksplɚˈeɪʃən/
fixed phrase
exploring underwater ocean areas
exploring and studying the ocean under the surface.
Exemples
- Undersea exploration has revealed thousands of previously unknown species.
- The team used a remotely operated vehicle for undersea exploration.
- Funding for undersea exploration increased after the discovery of new vents.
undersea tunnel
1/ˌʌndɚsˈi tˈʌnəl/
fixed phrase
tunnel built beneath the sea
a tunnel that goes under the sea.
Exemples
- The train passes through an undersea tunnel for about twenty minutes.
- They proposed an undersea tunnel to reduce ferry traffic.
- Building an undersea tunnel requires careful waterproofing and ventilation.
undersea volcano
1/ˌʌndɚsˈi vɑlkˈeɪnoʊ/
fixed phrase
volcano on the ocean floor
a volcano that erupts under the ocean.
Exemples
- An undersea volcano erupted, creating a cloud of steam and ash.
- Scientists detected lava flows from an undersea volcano using sonar.
- A chain of undersea volcanoes forms a ridge across the ocean floor.