Meaning & use
hydrodynamic
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Meanings
adjectivenot comparabletechnicalphysics
Relating to the forces and movement of liquids, especially water, when they flow.
Grammar: Usually before a noun and not used with 'more' or 'most': hydrodynamic forces, not 'more hydrodynamic forces'.
Patterns
- hydrodynamic forces
- hydrodynamic pressure
- hydrodynamic properties
Engineers studied the hydrodynamic forces acting on the bridge supports.
The model shows how hydrodynamic pressure changes as the tide rises.
Fish have hydrodynamic bodies that reduce drag in the water.
adjectivecomparabletechnical
Designed to move through water easily and with little resistance.
Grammar: Can be compared when describing shapes or designs: a more hydrodynamic hull.
Patterns
- a hydrodynamic shape
- more hydrodynamic than something
- hydrodynamic design
The new kayak has a more hydrodynamic hull than the old one.
Swimmers shave their bodies to make themselves more hydrodynamic.
A streamlined, hydrodynamic design helps the boat use less fuel.
adjectivenot comparabletechnicalphysics
Relating to the scientific study of how liquids in motion behave and transfer energy.
Grammar: Used before nouns in academic writing about the science itself.
Patterns
- hydrodynamic theory
- hydrodynamic modeling
- hydrodynamic stability
Her research focuses on hydrodynamic theory in ocean engineering.
The course covers hydrodynamic modeling of rivers and coastal waters.
Word forms
| comparative | more hydrodynamic |
|---|---|
| superlative | most hydrodynamic |
Common combinations
- hydrodynamic forces
- Hydrodynamic forces can crack concrete if the current is strong enough.
- hydrodynamic drag
- Reducing hydrodynamic drag makes submarines faster and quieter.
- hydrodynamic design
- Good hydrodynamic design keeps the ferry stable in rough seas.
- hydrodynamic pressure
- Sensors measured hydrodynamic pressure along the dam wall.
- hydrodynamic modeling
- Hydrodynamic modeling predicts how floods will spread through a valley.
Synonyms and how they differ
- fluid-dynamic
- Broader, because it covers gases and liquids, while hydrodynamic usually refers to water or other liquids.
- streamlined
- Describes a smooth shape that cuts through water or air; it focuses on appearance, not on the science of forces.
Word family
- hydrodynamics noun
- The branch of science that studies liquids in motion.
- hydrodynamically adverb
- In a way that relates to the forces of moving liquids.
- aerodynamic adjective
- The same idea but for air rather than water.
Commonly confused: hydrodynamic or hydromatic? hydrodynamic or hydroponic?
hydrodynamic vs hydromatic
Hydromatic is a brand-related term for a type of automatic transmission, not a word about water forces.
hydrodynamic vs hydroponic
Hydroponic means growing plants in water without soil, which is unrelated to motion and forces.
Practice
Choose the sentence that uses 'hydrodynamic' correctly.
Choose one answer.
'Hydrodynamic' describes shapes and forces involving moving water, so 'a more hydrodynamic hull' fits. It does not describe soil, feelings, or a physical object like a pump.
Make it your own
Write a sentence using “hydrodynamic”, then check it and compare it with the examples above.