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 City Council formally censured Lopez in 2022, barred him from committee appointments and limited his interactions with city staff outside of meetings.

From Los Angeles Times

The person who identified Tencent as that customer learned of the connection from business interactions in Japan.

From Barron's

"Our study is the first to examine these possible ecological interactions," said Dirley Cortés, lead author and doctoral student in the Department of Biology.

From Science Daily

RIU Hotels and Resorts have since apologised for the distress caused by the "misguided attempt at a playful interaction by a member of the hotel's entertainment team".

From BBC

In a brief statement, the mayor commended McDonnell and said she looked forward to working with him to make the city safer “while addressing concerns about police interaction with the public and press.”

From Los Angeles Times

Related Words

• communication
• cooperation
• synergy