SINCE 1828

An Encyclopædia Britannica Company

sealing nut

noun

Definition of sealing nut

: a nut used in making a seal; specifically : a nut for sealing the terminal post of a battery at the point where the post leaves the cover of the case

There's more!

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!

Seen and Heard

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

show

WORD OF THE DAY

mollycoddle

play

to treat with excessive attention

Words at Play

All the Hits

8 obscure words for bodily harm

alt-5adf93a49b0b2

The Fossil Encased in "Case In Point"

"In point" only lives in this phrase.

alt-5adf5d017e6bf

‘Sleight’ or ‘Slight’ of Hand?

Watch closely and be amazed.

alt-5ade0f1ca7a0c

'Complement' vs. 'Compliment'

The distinction is clear (now).

Ask the Editors

2017 Word of the Year: Behind the Scenes

How we chose 'feminism'

video-title-words-of-the-year-1066

Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

video-literally

Literally

How to use a word that (literally) drives some people nuts.

video-his-or-her

Is Singular 'They' a Better Choice?

The awkward case of 'his or her'

Word Games

Odd Habits and Quirks Quiz

Test your knowledge of strange human behaviors.

Take the quiz

cats-on-impossible-timber

More Confusing Words—Quiz

How many of these commonly confused words do you know?

Take the quiz

How Strong Is Your Vocabulary?

How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Take the quiz

Add Diction

Build a chain of words by adding one letter at a time.

Play the game