Lanthanum

Definition of 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.

Related Words

atomic number 57, La, metal, metallic element

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Lanolin
lansa
Lanseh
Lansquenet
Lant
Lantanium
Lantanuric
Lanterloo
Lantern
Lantern jaws
Lantern pinion
Lantern shell
Lantern-jawed
lanternfish
lanternfly
lanthanide
Lanthanite
lanthanon
Lanthanotidae
Lanthanotus
-Lanthanum-
Lanthopine
Lanthorn
Lanuginose
Lanugo
Lanyard
Lanyer
Lao-tse
Laocoon
Laodicean
Laos
Laotian
Lap
Lap joint
Lap riveting
lap up
Lap weld
Lap-jointed
Lap-welded
Laparocele
laparoscope

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