gradient
gb/ɡɹˈeɪdiənt/ us/ɡɹˈeɪdiənt/
B2
English
~ 9500
Senses
0 senses
Noun
B2
entity
1
smooth change between colors
A smooth change from one color or shade to another across a picture or background.
Usage pattern:
a gradient from [color A] to [color B]
Common mistake:
Learners sometimes confuse “gradient” with “gradation.” “Gradient” is the smooth change itself (for example, in color or light), while “gradation” is more about a series of small steps or levels (for example, different shades arranged in order).
Synonyms
color transition (Focuses on the change from one color to another, without implying a specific visual style.)
|
color blend (Suggests colors mixing together; slightly less technical and more artistic than gradient.)
Antonyms
solid color (Describes a single, uniform color with no gradual change across the surface.)
|
flat color (Informal design term for a color without shading, lighting, or gradient effects.)
Collocations
color gradient
|gradient background
|smooth gradient
|subtle gradient
|apply a gradient
|gradient effect
Themes
design
|technology
|art
|arts_entertainment
Examples
- The designer used a blue-to-purple gradient for the app’s login screen.
- Try adding a light gradient to the background to make the text stand out.
- The logo features a subtle gradient that makes it look more modern.
- She changed the button from a flat color to a radial gradient.
- The sunset sky formed a beautiful orange and pink gradient over the city.
Learner examples
- The website has a blue gradient at the top of the page.
- He added a red-to-yellow gradient to the picture.
- Use a light gradient so the words are easy to read.
- I like phone wallpapers with a simple color gradient.
Noun
B2
quantity
2
steepness of a road or slope
How steep a road, path, or hill is, often shown as a number like 10% or 1 in 10.
Usage pattern:
a [adjective] gradient on [a road / a hill]
Common mistake:
Learners sometimes say “the road has a big slope” when they mean the steepness of the road. In technical or formal descriptions of roads and railways, “gradient” is preferred, especially when talking about percentages or ratios.
Synonyms
slope (A more general word for a slanted surface; does not emphasize the numerical measure as much as “gradient.”)
|
incline (Often used for roads and paths; similar idea, but slightly less technical than “gradient.”)
Antonyms
flat (Describes ground or a road with no noticeable slope or rise.)
|
level (Emphasizes that the surface is even and not sloping up or down.)
Collocations
steep gradient
|gentle gradient
|road gradient
|climb a gradient
|1-in-10 gradient
|up a gradient
Themes
transport
|geography
|sports
|travel
|transportation
Examples
- Cyclists struggled with the steep gradient near the top of the hill.
- This route avoids the sharp gradient and is easier for beginners.
- The railway line has a maximum gradient of 1 in 40.
- Warning signs showed a 12% gradient ahead of the sharp bend.
- Running uphill on a slight gradient is great training for endurance.
Learner examples
- The road has a very steep gradient.
- This path has a gentle gradient, so it is easy to walk.
- Trucks move slowly on a high gradient.
- The sign shows a 10% gradient on this hill.
Noun
technical
C1
quantity
3
rate of change in space
In science, how quickly something like temperature or pressure changes when you move from one place to another.
Usage pattern:
a [quantity] gradient between [place A] and [place B]
Common mistake:
Learners may confuse “gradient” with a simple difference. A difference is just how much two places are not the same, while a gradient is how fast the value changes per unit of distance between them.
Synonyms
rate of change (General scientific phrase; does not specifically imply change with distance, as “gradient” does.)
|
slope (Used in graphs or simple cases; less precise than “gradient” for multi‑dimensional or physical fields.)
Antonyms
uniform (Describes a quantity that stays the same everywhere, meaning there is effectively no gradient.)
|
constant (Indicates a value that does not change with position, the opposite of having a non‑zero gradient.)
Collocations
temperature gradient
|pressure gradient
|concentration gradient
|strong gradient
|shallow gradient
|gradient in [temperature / pressure]
Themes
science
|physics
|chemistry
Examples
- A strong temperature gradient developed between the coast and the inland areas.
- The experiment relies on a concentration gradient across the cell membrane.
- Wind is driven in part by the pressure gradient between high- and low-pressure systems.
- They measured the vertical gradient of salinity in the lake.
- The model assumes a linear gradient in temperature from left to right.
Learner examples
- Scientists studied the temperature gradient in the ocean.
- There is a big pressure gradient between the storm and the clear sky.
- The drug moves across the cell because of the concentration gradient.
- Air flows from high to low along the pressure gradient.
Noun
technical
C1
entity
4
vector of partial derivatives
In higher math, a vector made from all the partial derivatives of a function, showing the direction in which the function increases the fastest.
Usage pattern:
the gradient of [a function / a loss function]
Common mistake:
Learners often use “derivative” and “gradient” as if they were the same in all cases. For functions of many variables, the correct term is “gradient,” which is a vector, not a single number.
Synonyms
derivative (A more general term; “gradient” is specifically the multi-dimensional derivative represented as a vector.)
|
slope vector (Informal descriptive phrase highlighting that the gradient gives slopes in each coordinate direction.)
Antonyms
stationary (In optimization, a point is stationary when the gradient is zero, effectively the opposite of having a non‑zero gradient.)
|
flat (Describes a function that does not change in any direction locally, corresponding to a zero gradient.)
Collocations
gradient of a function
|compute the gradient
|gradient vector
|take the gradient
|gradient descent
|non-zero gradient
Themes
mathematics
|science
|engineering
|education
Examples
- To find the direction of steepest ascent, we calculate the gradient of the function.
- In machine learning, the algorithm updates the weights using the gradient of the loss function.
- The gradient is zero at local maxima, minima, and saddle points.
- They visualized the gradient field to better understand the behavior of the potential function.
- Because the gradient is very small in this region, training progresses slowly.
Learner examples
- In calculus, we learn how to find the gradient of a function of two variables.
- The gradient points in the direction where the function grows the fastest.
- Gradient descent uses the negative gradient to reduce the loss.
- At an optimum, the gradient of the cost function is zero.
Grammar
Dictionary form
gradient
IPA
GB/ɡɹˈeɪdiənt/
US/ɡɹˈeɪdiənt/
Syllables & stress
gradi - ent (2 syllables)
Stress on 1st syllable (gradi)
Word forms
Noun
- Base: gradient
- Plural: gradients
Word family
Expressions
color gradient
1/kˈʌlɚ ɡɹˈeɪdiənt/
fixed phrase
smooth change between colors
A smooth change from one color to another across a picture, background, or shape.
Examples
- The banner uses a blue-to-pink color gradient to catch the eye.
- You can add a soft color gradient behind the text to make it easier to read.
- She prefers a simple color gradient instead of a busy photo background.
concentration gradient
1/kˌɔnsəntɹˈeɪʃən ɡɹˈeɪdiənt/
fixed phrase
technical
change of concentration with distance
How fast the amount of a substance in a fluid changes from one place to another.
Examples
- Molecules move down the concentration gradient from high to low concentration.
- The cell uses energy to move ions against the concentration gradient.
- Diffusion is driven by the concentration gradient across the membrane.
gentle gradient
1/d͡ʒˈɛntəl ɡɹˈeɪdiənt/
fixed phrase
slight upward or downward slope
A road, path, or hill that goes up or down slowly and is not very steep.
Examples
- The walking trail has a gentle gradient and is suitable for families.
- This route follows the river and keeps a gentle gradient all the way.
- Cyclists warmed up on a road with a gentle gradient before the race.
gradient descent
1/ɡɹˈeɪdiənt dɪsˈɛnt/
fixed phrase
technical
optimization method using gradients
A math and machine learning method that changes numbers step by step in the direction of the negative gradient to make a loss or error smaller.
Examples
- The neural network is trained using stochastic gradient descent.
- Gradient descent updates the parameters until the loss function stops decreasing.
- They compared gradient descent with more advanced optimization algorithms on the dataset.
linear gradient
1/lˈɪniɚ ɡɹˈeɪdiənt/
fixed phrase
technical
straight-line direction gradient
A gradient where the change, often in color, goes in one straight direction across a surface.
Examples
- The CSS code applies a linear gradient from white at the top to blue at the bottom.
- Designers often start with a simple linear gradient for buttons and backgrounds.
- He replaced the solid fill with a diagonal linear gradient to add depth.
pressure gradient
1/pɹˈɛʃɚ ɡɹˈeɪdiənt/
fixed phrase
technical
change of pressure with distance
How fast pressure changes when you move from one place to another in space.
Examples
- Air moves from areas of high pressure to low pressure along the pressure gradient.
- The weather report mentioned a strong pressure gradient across the region.
- A large pressure gradient can lead to very strong winds.
steep gradient
1/stˈip ɡɹˈeɪdiənt/
fixed phrase
very strong upward slope
A road, path, or hill that goes up or down very quickly in a short distance.
Examples
- Buses may struggle on the steep gradient just after the bridge.
- There is a warning sign for trucks before the steep gradient.
- Hikers slowed down as they reached the steep gradient near the summit.
temperature gradient
1/tˈɛmpɚɪt͡ʃɚ ɡɹˈeɪdiənt/
fixed phrase
technical
change of temperature with distance
How fast temperature changes when you move from one place to another in space.
Examples
- A strong temperature gradient near the surface can cause fog to form.
- The ocean shows a clear temperature gradient from the warm surface to the cold deep water.
- Engineers studied the temperature gradient across the wall to improve insulation.