Alpha iron
the magnetic allotrope of iron, stable below 910°c and having a body-centered cubic sp-ce lattice.
noun
a magnetic allotrope of iron that is stable below 910°c; ferrite
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a dibasic keto acid, c 5 h 6 o 5 , that occurs as an intermediate in the krebs’ cycle and in protein metabolism.
- Alpha-naphthol
see under . either of two isomeric hydroxyl derivatives, c 1 0 h 7 oh, of naphthalene (alpha-naphthol or 1-naphthol and beta-naphthol or 2-naphthol) white or yellowish crystals, with a phenolic odor, that darken on exposure to light: used chiefly in dyes, drugs, perfumes, and insecticides. historical examples alpha-naphthol for dark reds from primuline, greys […]
- Alpha-naphthyl group
(def 1).
- Alpha numerical
(of a set of characters) including letters, numbers, and, often, special characters, as punctuation marks: alphanumeric code. adjective (of a character set, code, or file of data) consisting of alphabetical and numerical symbols adj. 1912, contracted from alphabet + numeric (see numerical). alphabetical and numerical
- Alpha particle
a positively charged particle consisting of two protons and two neutrons, emitted in radioactive decay or nuclear fission; the nucleus of a helium atom. historical examples an alpha particle is the nucleus of a helium atom and is made up of two protons and two neutrons; it carries two positive charges. lrl accelerators lawrence radiation […]