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beta

1 of 2

noun

be·​ta ˈbā-tə How to pronounce beta (audio)
 chiefly British  ˈbē-
plural betas
1
: the 2nd letter of the Greek alphabet see Alphabet Table
2
: something or someone designated with the name beta or the Greek letter β especially denoting the second in position, order, or class
3
: a nearly complete prototype of a product (such as software)
the beta version
also : a stage of development in which a product is nearly complete but not yet ready for release
The app is still in beta.
4
: beta particle
beta emissions
5
: a measure of the risk potential of a stock or an investment portfolio expressed as a ratio of the stock's or portfolio's volatility to the volatility of the market as a whole
Beta measures a stock's price volatility—or risk—compared with the market in general … Marlys J. Harris
6
: beta wave
The findings could also help scientists better understand other beta-associated disorders, such as Parkinson's disease or obsessive compulsive disorder … Brown University News Release (Providence, Rhode Island)

beta

2 of 2

adjective

: second in position in the structure of an organic molecule from a particular group or atom
beta substitution
often used in combination
symbol β

Example Sentences

Noun a program that is currently in beta
Recent Examples on the Web
Noun
My skin can be sensitive, and this peel is packed with multiple hydroxy acids (alpha, beta, and poly)—a recipe, in my mind, for potential irritation. Tiffany Dodson, Harper's BAZAAR, 31 Aug. 2022 That study looked at neutralizing antibody responses to the beta and gamma variants, two earlier versions of the virus that spread in the U.S. but never became dominant. Berkeley Lovelace Jr., NBC News, 30 Aug. 2022 But the virus has evolved since then – through major variants called alpha, beta, delta and now versions of omicron. Karen Weintraub, USA TODAY, 28 June 2022 For keratosis pilaris: Treat this chronic condition with a body wash formula that contains salicylic or alpha and beta hydroxy acids. Dori Price, Good Housekeeping, 20 June 2022 The researchers looked at each person's neutralizing antibody levels against six variants: wildtype, alpha, beta, gamma, delta, and omicron. Beth Mole, Ars Technica, 24 Mar. 2022 Now Starr and Bloom are repeating their deep mutational scanning experiments on the alpha, beta, gamma, delta and omicron variants to gain similar insights about their receptor binding domains. Quanta Magazine, 11 Jan. 2022 Against alpha, beta and delta variants, having a previous infection protects the unvaccinated between 85% and 92% of the time. Andy Larsen, The Salt Lake Tribune, 7 Jan. 2022 It’s one of three major forms of radioactive disintegration (alpha, beta and gamma), and is a manifestation of the weak interaction, the fundamental force that causes the sun to shine. Washington Post, 13 Dec. 2021
Adjective
Pinterest unveiled a beta version of an in-app checkout feature in March, with plans to expand access later in the year. Jacob Carpenter, Fortune, 1 Sep. 2022 The company's website says the beta version will launch in select markets on or around Labor Day, typically a slower weekend for movie theaters. Bailey Schulz, USA TODAY, 30 Aug. 2022 The chief executive scolded a Tesla owner who posted videos to Twitter on Tuesday showing that a new beta version of the system marketed as Full Self-Driving at times struggles with right turns and other basic tasks. BostonGlobe.com, 24 Aug. 2022 The subsidized ticketing service will relaunch in beta form on Labor Day, though users will have to first join a waitlist. Rebecca Rubin, Variety, 22 Aug. 2022 MoviePass, the defunct monthly movie theater ticket subscription service, will relaunch in beta form on Labor Day. Leada Gore | Lgore@al.com, al, 22 Aug. 2022 The hospital may end up treating additional patients with beta thalassemia from other parts of the world where the disease is more prevalent, including the Middle East and Southeast Asia, Dansereau added. Ryan Cross, BostonGlobe.com, 17 Aug. 2022 The shift from an open source software project to a product takes many steps, from considering revenue sources to launching a beta version of the product. Adrian Bridgwater, Forbes, 9 Aug. 2022 So far, with the app scheduled to launch in late fall, around 100 artists have uploaded their work to the beta version. Palak Jayswal, The Salt Lake Tribune, 31 July 2022 See More

Word History

Etymology

Noun

Middle English betha, from Latin beta, from Greek bēta, of Semitic origin; akin to Hebrew bēth beth

First Known Use

Noun

14th century, in the meaning defined at sense 1

Adjective

1862, in the meaning defined above

Time Traveler
The first known use of beta was in the 14th century

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