horizontal
gb/hˌɔɹɪzˈɔntəl/ us/hˌɔɹɪzˈɔntəl/
B1
English
~ 5900
Senses
0 senses
adjective
B1
property
1
flat and parallel to the ground
Flat and going from side to side, not up and down.
Usage pattern:
[something] is horizontal
Common mistake:
Learners sometimes confuse "horizontal" with "flat" or "level". "Horizontal" specifically contrasts with "vertical" and means side-to-side direction, while "flat" can also mean smooth (for example, a flat tire), and "level" focuses on not sloping. Also, some learners say "horizontal line up and down" by mistake; remember horizontal = side to side, vertical = up and down.
Synonyms
flat (More general; can describe texture or lack of bumps, not only direction.)
|
level (Emphasizes being even and not sloping, especially compared with a reference point.)
Antonyms
vertical (Describes something that goes straight up and down instead of side to side.)
|
upright (Focuses on standing straight up, often used for people or objects like bottles or chairs.)
Collocations
horizontal line
|horizontal surface
|horizontal position
|horizontal axis
|horizontal bar
|perfectly horizontal
Themes
geometry
|science
|daily life
|space
|core_vocabulary
Examples
- Please keep the picture frame horizontal when you hang it.
- The shelves must be perfectly horizontal so that things don’t slide off.
- She lay in a horizontal position on the sofa, staring at the ceiling.
- Draw a horizontal line across the page at the halfway point.
Learner examples
- The table is not horizontal; it is higher on one side.
- He lay in a horizontal position on the bed.
- Use a ruler to make a horizontal line.
- The lake looked flat and horizontal in the distance.
Noun
technical
B2
entity
2
a horizontal line or direction
A straight line or direction that goes from side to side, not up and down.
Usage pattern:
draw a horizontal across [something]
Common mistake:
Learners may not realize that "a horizontal" can be used as a noun in technical or drawing contexts, and instead only use the adjective form. In everyday conversation, the noun form is rare; it is most common in geometry, design, and engineering.
Synonyms
horizontal line (More explicit; clearly states that the horizontal is a line, not just a direction.)
Antonyms
vertical (In geometry or design, a vertical is a line or direction that goes straight up and down instead of side to side.)
Collocations
draw a horizontal
|mark a horizontal
|find the true horizontal
|tilted from the horizontal
Themes
geometry
|engineering
|space
|science
Examples
- Draw a horizontal, then add two verticals to form a rectangle.
- The shelf was a few degrees off the horizontal and needed adjusting.
- Engineers checked the angle between the beam and the horizontal.
Learner examples
- First, draw a horizontal across the middle of the page.
- The post is not at 90 degrees to the horizontal.
- This line is closer to the horizontal than to the vertical.
adjective
technical
C1
relation
3
at the same level in a system
Describes a system or action where people or companies are on the same level, not above or below each other.
Usage pattern:
horizontal [noun]
Common mistake:
Learners sometimes think "horizontal integration" means expanding into different kinds of products or markets. That is usually called "diversification". "Horizontal integration" is about joining or buying companies at the same stage of production or in the same line of business. Also, "horizontal structure" does not mean physically flat offices; it refers to fewer or weaker levels of authority.
Synonyms
non-hierarchical (Emphasizes the lack of ranked levels more directly and is mainly used for organizations and relationships.)
|
flat (In business or organization talk, describes an organization with few or no management layers.)
Antonyms
vertical (In business and organization, describes actions or structures involving different levels in a chain, such as vertical integration or a vertical hierarchy.)
|
hierarchical (Stresses clear ranks and levels of authority instead of people or units being on the same level.)
Collocations
horizontal integration
|horizontal structure
|horizontal organization
|horizontal relationship
|horizontal communication
Themes
business
|organization
|politics
|relationships
Examples
- The company is moving from a traditional hierarchy to a more horizontal structure.
- Horizontal integration allowed the firm to buy several competitors at the same stage of production.
- Activists argued for more horizontal decision-making within the movement.
- In a horizontal organization, employees are encouraged to communicate directly with each other.
Learner examples
- The start-up has a very horizontal structure with few managers.
- Horizontal integration can help a company grow in size.
- Some groups use a horizontal model where everyone has the same power.
- They want less top-down control and more horizontal communication.
Grammar
Dictionary form
horizontal
IPA
GB/hˌɔɹɪzˈɔntəl/
US/hˌɔɹɪzˈɔntəl/
Syllables & stress
ho - ri - zont - al (4 syllables)
Stress on 3rd syllable (zont)
Word forms
Adjective
- Base: horizontal
Noun
- Base: horizontal
- Plural: horizontals
Word family
Expressions
horizontal line
1/hˌɔɹɪzˈɔntəl lˈaɪn/
fixed phrase
a line that is horizontal
A straight line that goes from side to side, not up and down.
Examples
- Draw a horizontal line across the middle of the page.
- On this graph, the time is shown along the horizontal line at the bottom.
- She underlined the heading with a thick horizontal line.
horizontal position
1/hˌɔɹɪzˈɔntəl pəzˈɪʃən/
fixed phrase
lying flat, not standing
A way of lying with your body flat, not sitting or standing.
Examples
- The nurse asked him to move into a horizontal position on the bed.
- After the long hike, she collapsed into a horizontal position on the couch.
- Patients should rest in a horizontal position for at least fifteen minutes.
horizontal stripes
1/hˌɔɹɪzˈɔntəl stɹˈaɪps/
fixed phrase
side-to-side stripes on something
Lines of color that go from side to side across clothes, walls, or other things.
Examples
- He wore a T-shirt with blue and white horizontal stripes.
- Horizontal stripes can make a room look wider.
- The flag features three horizontal stripes of equal width.
horizontal axis
1/hˌɔɹɪzˈɔntəl ˈæksɪs/
fixed phrase
technical
side-to-side axis on a graph
The side-to-side line on a graph or chart that usually shows time or categories.
Examples
- Plot the years along the horizontal axis at the bottom.
- On this chart, years are shown along the horizontal axis.
- The horizontal axis represents age groups.
- Label the horizontal axis with the different age groups.
- On this chart, the horizontal axis is measured in kilometers.
- The values on the horizontal axis increase from left to right.
horizontal integration
1/hˌɔɹɪzˈɔntəl ˌɪntɪɡɹˈeɪʃən/
fixed phrase
business
Merging companies at same stage
When two companies doing the same kind of work join together.
Examples
- Horizontal integration helped the firm expand its market share.
- The merger was a form of horizontal integration.
horizontal integration
2/hˌɔɹɪzˈɔntəl ˌɪntɪɡɹˈeɪʃən/
fixed phrase
technical
business growth by buying competitors
A business strategy where a company grows by joining with or buying other companies that do the same kind of work.
Examples
- The tech giant used horizontal integration to acquire several of its smaller rivals.
- Horizontal integration can increase a company’s market share but may raise competition concerns.
- The report explains the difference between horizontal integration and vertical integration.