点滅

1. Origins, structure, and basic meaning

• Structure: 点滅 is read as てんめつ and is a noun and する verb for a light repeatedly blinking or flashing on and off.
• Basic usage: A flashing signal appears in ランプが点滅する, while notification by flashing appears in 点滅で知らせる.

2. Common pitfalls and similar expressions

• Repeated action
  • It means that light and darkness alternate repeatedly, rather than that a light turns on or off only once.
• Difference from 点灯
  • 点灯 is lighting or remaining lit; 点滅 is alternating between the on and off states.