the branch of physics that deals with the emission and effects of electrons and with the use of electronic devices
"Dr. Aris spent her morning lecturing on electronics, explaining how the flow of electrons powers everything from smartphones to MRI machines."
The study and use of electrical devices that operate by controlling the flow of electrons or other electrically charged particles or by converting the flow of charged particles to or from other forms of energy.
"The university's new lab focuses on electronics, where researchers will design circuits that convert electron flow into precise light pulses for medical imaging."
In plain English: Electronics are devices that use electricity to control how information is stored, sent, or shown.
"My new apartment comes equipped with smart electronics like a voice-activated light system and a programmable thermostat."
Usage: In everyday usage, electronics refers to consumer gadgets and appliances like phones, computers, and televisions rather than the scientific study of them. When referring to these items collectively, treat the word as a plural noun that does not take an "s" at the end.
The word electronics combines the term electron with the suffix -ics to describe devices that operate using electrons. It entered English as a way to categorize technology based on this fundamental particle of electricity.