Lateral Meaning & How to Use the Word

Q: Does lateral mean horizontal?

Not exactly. Lateral means related to a side or moving sideward in relation to a relevant reference point. Horizontal means level or parallel to the horizon, so the terms overlap in some situations but are not synonyms in every field.

Q: Is lateral a formal or slang word?

Lateral is a standard English word, not slang. It is especially common in technical and professional contexts and can sound formal when a simpler word such as “sideways” would do.

Q: What is the opposite of lateral?

There is no single opposite that fits every context. Vertical is a common contrast for direction or orientation, while a workplace lateral move is often contrasted with a promotion or demotion.

What lateral means

Lateral refers to a side, a position beside something, or movement from one side to another. In everyday explanations, it often describes motion across a horizontal plane rather than upward or downward. The precise meaning depends on the subject: a lateral step in a dance is a step to the side, while the lateral surface of an object is one of its sides.

The word is standard English, not slang or a nonstandard expression. It is somewhat more formal and technical than ordinary alternatives such as sideways or side, so it is common in fields that need concise directional language. It can sound unnecessarily formal in casual conversation when a simpler word would be clearer.

People may also encounter lateral as a noun or as part of a set phrase. In American football, for example, a lateral is a backward or sideways pass to a teammate. In workplace language, a “lateral move” usually means changing to a different role at a similar level rather than moving up or down an organizational hierarchy.

Origin and word forms

Lateral comes from Latin lateralis, meaning “of the side,” which is based on latus, “side.” English adopted the term through French and Latin-influenced scholarly usage. Its history matches its central meaning: the word has long been associated with sides and sideward direction.

The most frequent form is the adjective: “The building has a lateral entrance.” The related adverb is laterally, as in “The camera moves laterally across the scene.” The noun lateral is less general and usually belongs to a specific context, such as sports or anatomy. The verb lateralize has specialized uses, particularly in discussions of how functions are distributed between the brain’s hemispheres; it is not a routine substitute for “move sideways.”

Do not confuse lateral with later. Despite their similar spelling, later concerns time (“I will call later”), while lateral concerns a side or sideways direction.

How to use lateral in a sentence

Use lateral when the side-to-side direction or side position matters, especially in a technical, professional, or descriptive context. It usually comes directly before a noun, or after a linking verb when describing a position or movement.

“The machine uses a lateral lever to shift the panel sideways.”
“The hikers followed a lateral trail along the hillside.”
“She made a lateral move from sales to customer support.”
“The player caught a lateral pass near the sideline.”
“The diagram shows the structure from a lateral view.”

These examples show why context matters. A lateral trail runs along or across a slope rather than necessarily climbing it; a lateral move at work is about a change in role or department, not physical motion. If the audience may not know the technical phrase, add a short explanation: “The panel slides laterally, from side to side.”

For ordinary directions, “move to the left” or “step sideways” is often more immediately clear. Choose lateral when it adds useful precision, not simply because it sounds more formal.

Lateral in different fields

The basic idea stays connected to a side, but professional fields apply it in distinct ways:

Anatomy and biology: Lateral describes a position farther from the body’s midline or an organism’s central axis. In a basic anatomical description, the ears are lateral to the nose. The exact reference point depends on the subject and the field’s conventions.
Movement and design: Lateral movement is motion to the side, while a lateral view shows an object from its side. In sports instruction, a lateral step or shuffle typically means moving sideways.
Workplaces: A lateral transfer or move changes a person’s role, team, or department without being primarily a promotion or demotion. The title and duties may still change, so “lateral” does not guarantee that two jobs are identical.
American football: A lateral is a pass thrown sideways or backward, rather than forward. The word here is a noun for a particular kind of play or pass.

These are related uses, not interchangeable definitions. In biology, the term describes relative position; at work, it describes a kind of career move; in football, it names a pass. Reading the surrounding phrase usually makes the intended sense clear.

Lateral compared with similar words

Sideways is the most accessible everyday synonym when describing motion: “The box slid sideways.” Sideward also means toward the side, but it is less common. Horizontal describes a level direction or orientation, generally parallel to the horizon; it is not always equivalent to lateral. A person can move laterally along a sloping path, for example, without moving horizontally relative to the ground.

Vertical refers to an upright or up-and-down direction and is often contrasted with lateral in diagrams, movement, and technical descriptions. Still, the terms are not exact opposites in every context: one describes a side-related direction, while the other describes an orientation relative to vertical. In workplace usage, the contrasting idea is usually a vertical move, meaning advancement or a step down in hierarchy, though the details depend on the organization.

Common misunderstandings

Assuming it always means “horizontal”: Lateral generally concerns a side or sideward relation, but the reference axis changes with context. A lateral anatomical position is measured against a body’s midline, not necessarily the horizon.
Assuming every lateral job change is equal: The phrase signals a move at roughly the same organizational level, but responsibilities, title, and future opportunities can differ.
Using it when “later” is meant: Lateral has no time-related meaning. “We will discuss it later” is correct; “we will discuss it lateral” is not.
Thinking it is slang: It is a standard word, although some of its uses are specialized. Its technical tone can make it feel like jargon in casual settings.

Frequently Asked Questions

Does lateral mean horizontal?

Not exactly. Lateral means related to a side or moving sideward in relation to a relevant reference point. Horizontal means level or parallel to the horizon, so the terms overlap in some situations but are not synonyms in every field.

Is lateral a formal or slang word?

Lateral is a standard English word, not slang. It is especially common in technical and professional contexts and can sound formal when a simpler word such as “sideways” would do.

What does a lateral move mean at work?

It generally means changing to a different role, department, or team at a similar level rather than moving up or down. The new job can still have different duties, a different title, or a different path for advancement.

What is a lateral in football?

In American football, a lateral is a pass thrown sideways or backward to a teammate. It is distinguished from a forward pass by the direction of the throw.

What is the opposite of lateral?

There is no single opposite that fits every context. Vertical is a common contrast for direction or orientation, while a workplace lateral move is often contrasted with a promotion or demotion.

Further reading: Merriam-Webster. Details can change, so check the official page for anything that matters to you. Spotted a mistake? Tell us. How we write an answer.