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lanthanum

   Also found in: Dictionary/thesaurus, Financial, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
lanthanum /lan·tha·num/ (La) (lan´thah-num) a chemical element, at. no. 57.
lan·tha·num (lnth-nm)
n. Symbol La
A soft malleable metallic rare-earth element used in glass manufacture. Atomic number 57.
lanthanum (La) [lan´thah-num]
a chemical element, atomic number 57, atomic weight 138.91. (See Appendix 6.)
lanthanum
a chemical element, atomic number 57, atomic weight 138.91, symbol La. See Table 6.
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