Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

delta wave

noun

Definition of delta wave

  1. :  a high amplitude electrical rhythm of the brain with a frequency of less than four cycles per second that occurs especially in slow-wave sleep, in infancy, and in many diseased conditions of the brain —called also delta, delta rhythm



1936

First Known Use of delta wave

1936


Medical Dictionary

delta wave

noun

Medical Definition of delta wave

  1. :  a high amplitude electrical rhythm of the brain with a frequency of less than 6 hertz that occurs especially in deep sleep, in infancy, and in many diseased conditions of the brain—called also delta, delta rhythm




Learn More about delta wave


Seen and Heard

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

WORD OF THE DAY

February 12, 2016

of, relating to, or suggestive of marble

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

100 pounds 196.5 pounds 2.2 pounds 16.96 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ