The Greek letter beta (β). In mathematics and science, it is often used to denote a variable or a parameter, such as an angle or the beta coefficient in regression analysis. BETA is an aerospace company designing, manufacturing and selling high-performance electric aircraft, advanced electric propulsion systems, components and charging systems to top operators worldwide. BETA has built and flown its family of… A detailed overview of BETA Technologies, Inc. (BETA) stock, including real-time price, chart, key statistics, news, and more. Beta USA Offers Motocross, Enduro, 450 RX, 350 RS, 390 RS, 430 RS, 500 RS, 300 RR, 300 Xtrainer , Beta usa, Beta America Find the latest BETA Technologies, Inc. (BETA) stock quote, history, news and other vital information to help you with your stock trading and investing. The meaning of BETA is the 2nd letter of the Greek alphabet. How to use beta in a sentence. Learn about the Greek letter Beta (β), its pronunciation, usage examples, and common applications in mathematics, science, and engineering. beta (countable and uncountable, plural betas) The second letter of the Greek alphabet (Β, β), preceded by alpha (Α, α) and followed by gamma, (Γ, γ). In modern Greek it represents the voiced labiodental fricative sound of v found in the English words have and vase. (education, rare) An academic grade better than a gamma and worse than an alpha. quotations The National Beta Club was founded on the standards set forth in our Constitution and continues to uphold students to the same ideals. The articles of our Constitution and By-Laws provide direction and purpose for all clubs across the globe. Beta (UK: / ˈbiːtə /, US: / ˈbeɪtə / ⓘ; uppercase Β, lowercase β, or cursive ϐ; Ancient Greek: βῆτα, romanized: bē̂ta or Greek: βήτα, romanized: víta) is the second letter of the Greek alphabet. In the system of Greek numerals, it has a value of 2. In Ancient Greek, beta represented the voiced bilabial plosive IPA: [b]. In Modern Greek, it represents the voiced.