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Glite Dictionary
Lr

Lr

3 9.9
The chemical symbol for the element lawrencium, a man-made radioactive metal with atomic number 103
  • noun
  • Specialized
translation icon : Lr
  • The periodic table now includes Lr, which has an atomic number of 103.

Examples

  • The Labeled Release (LR) experiment caused scientists' heartbeats to skip.

    Academic text (1994)

  • The likelihood ratio (LR) summarizes information about the diagnostic test by combining information about the sensitivity and specificity.

    Academic text (2007)

  • Table B.2 shows the distribution of high-risk (HR) and low-risk (LR) patients in our population based on LD threshold (LDT).

    Academic text (2016)

  • Lr, or lawrencium, is a synthetic element created in a laboratory.

  • Scientists discovered Lr, a radioactive element, during their research in the 1950s.

Synonyms

lawrencium
vsLr
  • Specialized
9.9

A man-made radioactive element with the number 103

is the written symbol used to represent that element
atomic number 103
vsLr
  • Specialized
9.9

A radioactive element called lawrencium that scientists make in a lab

is the written symbol used to represent that transuranic element

Surface Forms

Lr singular

Etymology

Lr is the chemical symbol for the element lawrencium, a man-made, radioactive metal made in labs. The name lawrencium honors the American scientist Ernest Lawrence, and the ending -ium is the same as in familiar elements like 'helium', so Lr simply stands for the metal named for Lawrence.