mendelevium

American  

[men-dl-ee-vee-uhm] / ˌmɛn dlˈi vi əm /

noun

Chemistry, Physics.

1. a transuranic element. Md, Mv; 101.

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mendelevium British  

/ ˌmɛndɪˈliːvɪəm /

noun

1. a transuranic element artificially produced by bombardment of einsteinium. Symbol: Md; atomic no: 101; half-life of most stable isotope, ²⁵⁸ Md: 60 days (approx.); valency: 2 or 3

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mendelevium Scientific  

/ mĕn′də-lē′vē-əm /

1. A synthetic, radioactive metallic element of the actinide series that is produced by bombarding einsteinium with helium ions. Its most stable isotope is Md 258 with a half-life of approximately 51.5 days. Atomic number 101.

2. See Periodic Table

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Etymology

Origin of mendelevium

1950–55; named after D. I. Mendeleev; -ium

Example Sentences

The naming of elements No. 100 and No. 101, fermium and mendelevium, had caused little stir, but that relative calm soon shattered.

From The New Yorker • Dec. 27, 2019

Many are named after great scientists: einsteinium, curium, fermium, mendelevium, bohrium and rutherfordium.

From BBC • Sep. 19, 2014

Even more important, mendelevium stays around long enough to make a good target for high-velocity particle accelerators.

From Time Magazine Archive

No one yet understands why mendelevium 258 is so long-lived.

From Time Magazine Archive

In 1955, element 101 was named mendelevium in his honor.

From "A Short History of Nearly Everything" by Bill Bryson