smoke detector

noun

Definition of smoke detector

  1. :  an alarm that activates automatically when it detects smoke —called also smoke alarm

First Known Use of smoke detector

circa 1927


SMOKE DETECTOR Defined for Kids

smoke detector

noun smoke de·tec·tor \-di-ˈtek-tər\

Definition of smoke detector for Students

  1. :  a device that sounds an alarm automatically when it detects smoke



Seen and Heard

What made you want to look up smoke detector? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to become worse as time passes

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!