Word:

Lanthanum

Lan´tha`num   Pronunciation: lăn´thå`nŭm
n.1.(Chem.) A rare element of the rare earth group of the metals, of atomic number 57, allied to aluminum. It occurs in certain rare minerals, as cerite, gadolinite, orthite, etc., and was so named from the difficulty of separating it from cerium, didymium, and other rare earth elements with which it is usually associated. Atomic weight 138.9. Symbol La.
Noun1.lanthanum - a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
Synonyms: atomic number 57, La
atomic number 57, La, metal, metallic element
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lantern pinion
Lantern shell
lantern slide
lantern wheel
lantern-fly
Lantern-jawed
lanternfish
lanternfly
lanthanide
lanthanide series
Lanthanite
lanthanoid
lanthanon
Lanthanotidae
Lanthanotus
Lanthanotus borneensis
-- Lanthanum --
Lanthopine
Lanthorn
Lanuginose
Lanugo
Lanyard
Lanyer
Lanzhou
Lao
Lao People's Democratic Republic
Lao-tse
Lao-tzu
Lao-zi
Laocoon
Laodicean
Laos
Laotian
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