# Definitions for velocityvəˈlɒs ɪ tive·loc·i·ty

### Princeton's WordNetRate this definition:3.6 / 5 votes

1. speed, velocitynoun

distance travelled per unit time

### WiktionaryRate this definition:3.8 / 4 votes

1. velocitynoun

A vector quantity that denotes the rate of change of position with respect to time, or a speed with the directional component.

2. velocitynoun

Rapidity of motion.

3. velocitynoun

The rate of occurrence.

4. velocitynoun

The number of times that an average unit of currency is spent during a specific period of time.

5. Etymology: From velocitas, from velox.

### WikipediaRate this definition:5.0 / 1 vote

1. Velocity

Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time (e.g. 60 km/h northbound). Velocity is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of bodies. Velocity is a physical vector quantity; both magnitude and direction are needed to define it. The scalar absolute value (magnitude) of velocity is called speed, being a coherent derived unit whose quantity is measured in the SI (metric system) as metres per second (m/s or m⋅s−1). For example, "5 metres per second" is a scalar, whereas "5 metres per second east" is a vector. If there is a change in speed, direction or both, then the object is said to be undergoing an acceleration.

### ChatGPTRate this definition:0.0 / 0 votes

1. velocity

Velocity is a physical vector quantity that represents the rate of change of an object's displacement as a function of time. It includes both the speed of the object and its direction of motion. It can be also defined as the speed of something in a given direction.

### Webster DictionaryRate this definition:5.0 / 5 votes

1. Velocitynoun

quickness of motion; swiftness; speed; celerity; rapidity; as, the velocity of wind; the velocity of a planet or comet in its orbit or course; the velocity of a cannon ball; the velocity of light

2. Velocitynoun

rate of motion; the relation of motion to time, measured by the number of units of space passed over by a moving body or point in a unit of time, usually the number of feet passed over in a second. See the Note under Speed

### WikidataRate this definition:3.3 / 3 votes

1. Velocity

In kinematics, velocity is the rate of change of the position of an object, equivalent to a specification of its speed and direction of motion. Speed describes only how fast an object is moving, whereas velocity gives both how fast and in what direction the object is moving. If a car is said to travel at 60 km/h, its speed has been specified. However, if the car is said to move at 60 km/h to the north, its velocity has now been specified. To have a constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion in a straight path. Thus, a constant velocity means motion in a straight line at a constant speed. If there is a change in speed, direction, or both, then the object is said to have a changing velocity and is undergoing an acceleration. For example, a car moving at a constant 20 kilometres per hour in a circular path has a constant speed, but does not have a constant velocity because its direction changes. Hence, the car is considered to be undergoing an acceleration. Velocity is a vector physical quantity; both magnitude and direction are required to define it. The scalar absolute value of velocity is called "speed", a quantity that is measured in metres per second when using the SI system. For example, "5 metres per second" is a scalar, whereas "5 metres per second east" is a vector. The rate of change of velocity as a function of time is "acceleration", which describes how an object's speed and direction of travel change at each point in time. In science a "deceleration" is called a "negative acceleration", for example: −2 m/s².

### Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Velocity

vē-los′i-ti, n. swiftness: speed: rate of change of position of a point per unit of time.—n. Velocim′eter, an apparatus for measuring velocity.—Initial velocity, the rate of movement of a body at starting, esp. of a projectile. [L. velocitasvelox, swift.]

### The Standard Electrical DictionaryRate this definition:0.0 / 0 votes

1. Velocity

The rate of motion of a body. It is usually expressed in distance traversed per second of time. The absolute unit is one centimeter per second or kine. The foot per second is very largely used also. The dimensions of velocity are length (L) divided by time (T) or L/T.

### Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. velocity

In naval architecture, designing for velocity is giving that form to a ship's body by which she will pass through the water in the quickest space of time.

### Military Dictionary and GazetteerRate this definition:0.0 / 0 votes

1. velocity

Is rate of motion; the relation of motion to time, measured by the number of units of space passed over by the moving body in a unit of time, usually the number of feet in a second. The velocity of a projectile, at any point of its flight, is the space in feet passed over in a second of time, with a continuous, uniform motion. Initial velocity is the velocity at the muzzle of the piece; remaining velocity is the velocity at any point of the flight; terminal velocity is the velocity with which it strikes its object; and final velocity of descent in air, is the uniform velocity with which a projectile moves, when the resistance of the air becomes equal to the accelerating force of gravity. The initial velocity of a projectile may be determined by the principles of mechanics which govern the action of the powder, the resistance of the projectile, etc., or by direct experiment.

### Editors ContributionRate this definition:0.0 / 0 votes

1. velocity

A speed of motion.

The washing machine velocity is created at a specific speed.

Submitted by MaryC on December 18, 2019

### British National Corpus

1. Nouns Frequency

Rank popularity for the word 'velocity' in Nouns Frequency: #2946

### Numerology

1. Chaldean Numerology

The numerical value of velocity in Chaldean Numerology is: 3

2. Pythagorean Numerology

The numerical value of velocity in Pythagorean Numerology is: 3

### Examples of velocity in a Sentence

1. The great thing is that everything on this wheelchair is automated, if I want to climb the stairs I can just drive up to them, turn around, press one button and all I have to do is control the velocity I want to drive at. The alignment on the stairs, the leveling of the wheelchair driver, is automated and he can control it, he can view the back with a back facing camera, and have a full, safe, driving experience.

2. This program is maturing. We're building mass and velocity, capability and confidence.

3. The detected coronal mass ejection is 10,000 times more massive than the most extreme solar coronal mass ejections, but not as fast as expected, Solar coronal mass ejections can be ejected at velocities up to a thousand kilometers per second [2.2 million mph], while the detected coronal mass ejection has a velocity of 90 kilometers per second [200,000 mph].

4. The munition with knives has been around since at least the Vietnam War.The military term for the warhead is flechettes, which are dart-like submunitions that are released and spread out in flight as an anti-personnel device, munitions have had a variety of warheads since before the Civil War, where they used everything from classic exploding cannonballs, todumbbell-shaped projectiles and grapeshot, which was basically shotgun-shell BBs (only much larger) that used mass and velocity as the engagement mechanism.

5. I think that the velocity of the market moving up seems to be overdone at the moment, the fundamentals are improving, but at a slow and steady pace. There are still headwinds that will keep prices choppy.

### Popularity rank by frequency of use

velocity#1#6538#10000

## Translations for velocity

### From our Multilingual Translation Dictionary

• سرعة
• ско́расць
• rychlost
• hastighed
• Geschwindigkeit
• ταχύτητα
• lastertasun
• سرعت
• kiertonopeus, nopeus, vauhti
• vitesse
• treoluas
• वेग
• հաճախություն, արագություն
• kecepatan
• velocità
• 速さ, 速度
• სისწრაფე, სიჩქარე
• 速度, 속도
• vēlōcitās, celeritās
• ātrums
• halaju
• veloċità
• hastighet
• snelheid
• hastigheit
• hastighet
• prędkość
• скорость, быстрота
• hastighet, fart
• திசைவேகம்
• వేగం
• hagibis
• سمتار
• tốc độ, 速度
• גיכקייַט
• 速度

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