amphidromic point: meaning, definition, pronunciation and examples
C2Highly technical/specialized
Quick answer
What does “amphidromic point” mean?
A geographical location where the tidal amplitude is zero, acting as a node around which the tide wave rotates.
Audio
Pronunciation
Definition
Meaning and Definition
A geographical location where the tidal amplitude is zero, acting as a node around which the tide wave rotates.
In oceanography and tidal science, a point of no or minimal tidal change from which cotidal lines radiate. It represents the centre of an amphidromic system, where the tidal constituent's amplitude is negligible due to the interference of tidal waves.
Dialectal Variation
British vs American Usage
Differences
No notable lexical differences; the scientific term is identical in both variants.
Connotations
Purely technical, with no cultural or connotative differences.
Frequency
Exclusively used in advanced oceanographic, hydrographic, and maritime engineering contexts in both regions.
Grammar
How to Use “amphidromic point” in a Sentence
The amphidromic point [is located] [in/off the coast of] [Place][Geographical area] has an amphidromic point [near/at] [coordinates]Vocabulary
Collocations
Examples
Examples of “amphidromic point” in a Sentence
adjective
British English
- The amphidromic system was complex.
- Amphidromic circulation is key to the model.
American English
- The amphidromic system was complex.
- Amphidromic circulation is key to the model.
Usage
Meaning in Context
Business
Not used.
Academic
Used exclusively in advanced physical geography, oceanography, and earth sciences.
Everyday
Virtually never used.
Technical
Core term in tidal analysis, coastal engineering, and nautical charting.
Vocabulary
Synonyms of “amphidromic point”
Strong
Neutral
Weak
Vocabulary
Antonyms of “amphidromic point”
Watch out
Common Mistakes When Using “amphidromic point”
- Mispronouncing 'amphidromic' with stress on 'am-' (correct: 'am-fi-DROM-ic').
- Using it as a general term for any calm sea area.
- Treating it as a plural ('amphidromics point').
FAQ
Frequently Asked Questions
No, it is a theoretical point derived from mathematical tidal models, though it corresponds to a specific geographic coordinate.
They are fundamental for predicting tidal patterns, creating accurate tidal charts, and for coastal engineering projects.
Yes, each ocean basin typically contains multiple amphidromic points, each governing the tidal pattern in its region.
Yes, its position can change slowly due to geological processes like sea-level change or sediment deposition, but it is generally stable over human timescales.
A geographical location where the tidal amplitude is zero, acting as a node around which the tide wave rotates.
Amphidromic point is usually highly technical/specialized in register.
Amphidromic point: in British English it is pronounced /ˌæmfɪˈdrɒmɪk pɔɪnt/, and in American English it is pronounced /ˌæmfəˈdroʊmɪk pɔɪnt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
AMPHI (around) + DROMIC (running) + POINT: imagine a point where tidal waves run around it, not up and down.
Conceptual Metaphor
THE CENTRE OF A TIDAL CLOCK FACE (the point is the central pivot, and the tide 'rotates' around it like a clock hand).
Practice
Quiz
What is an amphidromic point?