WordGarden.ioexcitation
C1Pronunciation
UK
- /ɛksɪtˈeɪʃən/
US
- /ˌɛksaɪˈteɪʃən/
Meanings
Noun
the raising of an atom, molecule, or physical system to a higher energy state
the stimulation of a nerve, cell, muscle, or tissue into activity
the supply of electric current or energy to a device, circuit, or magnetic field
More meaningsFewer meanings
a state of excitement, agitation, or heightened emotion
sexual arousal or stimulation
Beyond the definition
Excitation isn't always about feeling thrilled, though it can be. It describes a state of being stirred up or stimulated, whether physically, emotionally, or in a scientific process. Think of a dog getting worked up when you grab its leash, or a scientist watching for a change in energy during an experiment.
The word often refers to raising something to a higher energy level, like an atom absorbing light. It is common in physics, chemistry, and biology, but it can also describe strong bodily or emotional responses. A sudden plot twist might create a feeling of excitement in a reader, while stress or anticipation might bring a person into a visibly stirred-up state.
Excitation describes the state of being stimulated into activity, whether physically, emotionally, or in terms of energy. It is not just another word for happiness. It suggests a rise in energy, a sharper state of awareness, or a stronger response to some stimulus.
In everyday language, people often connect this state with enthusiasm or high energy. For instance, "The children were in a state of wild excitation when the circus arrived" suggests they were thrilled and physically buzzing with energy. However, it is not always pleasant. It can also describe nervous tension or agitation: a speaker facing a large crowd might show signs of physical excitation, such as trembling hands or a racing heart.
Scientifically, excitation has more exact meanings. In physics, it refers to raising an electron, atom, or nucleus to a higher energy state. In chemistry, it describes adding energy to an atom or molecule. In biology and neuroscience, it is central to how cells respond to signals. Neurons, for example, become excited when incoming signals make them more likely to fire.
While "excitation" is a noun, it is closely related to the adjective "excitatory," which is used in technical fields for things that increase activity, and to the more common word "exciting." So whether we are talking about the thrill of a roller coaster, the energy change in a molecule, or the firing of neurons in the brain, excitation is about a move into a more active and responsive state. It is a useful word because it connects everyday experience with the language of science.
Examples
- 1
Physics
Light causes excitation of the electrons in the material.
- Domainexcitation of electrons
a state where electrons receive extra energy
- 2
Medical treatment
The medication is used to reduce abnormal excitation in the brain.
- 3
Structural engineering
Engineers tested how the bridge responded to repeated excitation from the wind.
- Domainexcitation from the wind
force or movement from the wind that makes something vibrate
See also
Similar
Shades of meaning
- arousal
- energization
Contrast
Do not confuse
Used with (collocations)
- neural excitation
- electrical excitation
- atomic excitation
- excitation energy
Word family
Explore
- action potential
- energy level
Forms and spellings
2 forms open this card.
Main spelling
- excitationnoun
Forms
- excitationspluralnoun