Word: Light-emitting Diode (LED)
Definition:
A light-emitting diode (often abbreviated as LED) is a small electronic device that produces light when electricity passes through it. The light it emits can be different colors, which depend on the materials used to make the LED.
Usage Instructions:
You can use "light-emitting diode" when talking about technology, lighting, or electronics. However, in everyday conversations, it's often just called "LED."
Example:
- "We replaced all the old bulbs in our house with LED lights because they use less electricity and last longer."
Advanced Usage:
In more technical contexts, you might discuss the efficiency of LEDs compared to traditional light sources, their applications in displays (like TVs and smartphones), and their environmental impact.
Word Variants:
- LED (abbreviation)
- Diode (the basic component that makes up an LED)
Different Meanings:
The term "diode" generally refers to an electronic component that allows electricity to flow in one direction only. While "light-emitting diode" specifically refers to diodes that produce light, not all diodes emit light.
Synonyms:
- Light source - Bulb (in a general sense, but not all bulbs are LEDs)
Idioms and Phrasal Verbs:
There aren’t specific idioms or phrasal verbs related to "light-emitting diode," but here are some related phrases:
- "Light up" - to illuminate or make something bright. For example, "The new LED lights really light up the room." - "Burn out" - when a light bulb or electronic component stops working. For example, "My LED bulb has burned out after several years."
Summary:
A light-emitting diode (LED) is a small device that lights up when electricity flows through it. They are popular because they are energy-efficient and long-lasting.