Merriam-Webster Logo
SINCE 1828
dictionary thesaurus view recents

air-core

adjective
Save Word
variants: or less commonly air-cored

Definition of air-core

: having no magnetic material (as iron) in its magnetic circuit —used especially of certain coils, solenoids, or transformers

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of air-core

1891, in the meaning defined above

Keep scrolling for more

Learn More about air-core

Time Traveler for air-core

Time Traveler

The first known use of air-core was in 1891

See more words from the same year

Statistics for air-core

Cite this Entry

“Air-core.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/air-core. Accessed 30 May. 2020.

Comments on air-core

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

Show Comments  Hide Comments 

WORD OF THE DAY

gamut

Listen to the pronunciation of gamut

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

May 2020 Words of the Day Quiz

  • a blooming wisteria tree
  • Which is a synonym of exiguous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

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!

Words at Play
Ask the Editors
Word Games