See under .
any of the series of acids usually occurring as amorphous powders and varying in composition from H 2 SnO 3 (alpha-stannic acid) to H 4 SnO 4 .
- Alpha test
an early test of new or updated software or hardware conducted by the developers or manufacturers prior to beta-testing by potential users. to subject (software or hardware) to an alpha test. Historical Examples The alpha test included 212 questions in all, and a correct answer to any question netted the subject one point. Psychology Robert […]
- Alpha stock
noun any of the most active securities on the Stock Exchange of which there are between 100 and 200; at least ten market makers must continuously display the prices of an alpha stock and all transactions in them must be published immediately
- Alpha testing
to subject (software or hardware) to an alpha test. noun an in-house test of a new or modified piece of computer software verb (transitive) to test (software) in this way Compare beta-test programming Testing of software at the developer’s site by the customer. The stage before beta testing. (1996-05-10)
vitamin E. alpha-tocopherol n. A substance that is obtained from wheat germ oil or by synthesis, biologically exhibits the most vitamin E activity of the tocopherols, and is an antioxidant. alpha-tocopherol (āl’fə-tō-kŏf’ə-rôl’, -rōl’) A water-insoluble alcohol that occurs in plant oils (especially wheat germ oil), egg yolks, and liver, and is also produced synthetically. Alpha-tocopherol […]