interaction

American  

[in-ter-ak-shuhn] / ˌɪn tərˈæk ʃən /

noun

1. reciprocal action, effect, or influence.

2. Physics.

   1. the direct effect that one kind of particle has on another, in particular, in inducing the emission or absorption of one particle by another.

   2. the mathematical expression that specifies the nature and strength of this effect.

---

interaction British  

/ ˌɪntərˈækʃən /

noun

1. a mutual or reciprocal action or influence

2. physics the transfer of energy between elementary particles, between a particle and a field, or between fields See strong interaction electromagnetic interaction fundamental interaction gravitational interaction weak interaction electroweak interaction

---

Other Word Forms

• interactional adjective

Etymology

Origin of interaction

First recorded in 1825–35; inter- + action

Example Sentences

The lab focuses on the neurobiological basis of behavioral plasticity, including learning, memory, and addiction, as well as gene-by-environment interactions linked to Alzheimer's disease and related dementia.

From Science Daily

These tools track their productivity, customer interactions and real-time behavior — including, in some cases, audio and video surveillance on the job.

From MarketWatch

Despite this history of water interaction, the researchers found that fragile organic molecules were still preserved.

From Science Daily

The more children seek social stimulation online, the less actual interaction they have with friends in person.

From The Wall Street Journal

The convicted man took the case to the Supreme Court, arguing that there had been no violence or intimidation in his interaction with the woman.

From BBC

Related Words

• communication
• cooperation
• synergy