control rod

noun
plural control rods

Definition of control rod

: a rod of a neutron-absorbing material (such as boron carbide) used to regulate the rate of nuclear fission in a reactor

First Known Use of control rod

1906, in the meaning defined above

Keep scrolling for more

Learn More about control rod

Statistics for control rod

Last Updated

17 Sep 2019

Time Traveler for control rod

The first known use of control rod was in 1906

See more words from the same year

Comments on control rod

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

WORD OF THE DAY

something of little or no value

Get Word of the Day daily email!

Test Your Vocabulary

Pass the Little Ribbons: A Pasta Word Quiz

  • rotelle pasta
  • Match the pasta to its meaning in English: Rotelle
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

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!