Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A synthetic radioactive transuranic element of the actinide series. Atomic number 101; mass numbers 256 and 258; half-lives approximately 1.3 hours (Md 256) and 51.5 days (Md 258). See Table at element.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A transuranic chemical element (symbol Md, formerly Mv) with atomic number 101.

from the GNU version of the Collaborative International Dictionary of English

  • adj. an unstable radioactive element discovered in 1955 and produced artificially only in very small quantities; symbol Md (also Mv). It is a transuranic element with atomic number 101. Isotopes 255, 256, 257, and 258 have been prepared. Md258, the longest-lived, has a half-life of two months.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles (Md is the current symbol for mendelevium but Mv was formerly the symbol)

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

After Dmitri Ivanovich Mendeleev.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Named after the scientist Dmitri Mendeleev, who is the creator of the periodic table. The same name was proposed, but rejected, for the earlier-discovered elements berkelium and erbium.

Examples

  • Element number 101 is named mendelevium in his honor.

    MAKE Magazine

  • He heedlessly bores through helium, mercury, ytterbium, molybdenum, and more until he reaches mendelevium-and her last nerve.

    Slate Magazine

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  • Md.

    December 16, 2007