alpha track


Definition of alpha track

: designed to measure and record radon levels by creating a graphic record of the alpha particles that are emitted as radon undergoes radioactive decay alpha track detectors Detection of radon in the home can be accomplished with charcoal canisters, ion detectors, and alpha track monitors available from most health departments or extension agents …— Kathryn Hilgenkamp, Environmental Health: Ecological Perspectives, 2005

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 alpha track

circa 1949, in the meaning defined above

Keep scrolling for more

Learn More about alpha track

Time Traveler for alpha track

Time Traveler

The first known use of alpha track was circa 1949

See more words from the same year

Statistics for alpha track

Cite this Entry

“Alpha track.” Dictionary, Merriam-Webster, Accessed 9 Jul. 2020.

Comments on alpha track

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


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

A More Exception(al) Quiz

  • hot dog  hot dog  hot dog  hot dog cat
  • Which of the following words is not a synonym for ‘a young person’?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

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

Love words? Need even more definitions?

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