Definition of lanthanum in English:

lanthanum

noun ˈlanθənəmˈlænθənəm

mass noun

The chemical element of atomic number 57, a silvery-white rare earth metal.
Example sentencesExamples
- Green light is also emitted from some lanthanide elements: lanthanum, cerium, and terbium.
- Oxalate efflux could not be triggered by treatment with the trivalent cation lanthanum or by phosphorus deficiency, indicating that the efflux was specific to the Al treatment.
- Its chemical properties are similar to those of lanthanum, the element above it in the periodic table.
- It belongs to the family known as the lanthanides, named after the first member of that series, lanthanum.
- Samarium is a rare earth element, one of the elements that occupy the space in Row 6 of the periodic table between lanthanum and hafnium.

Origin

Mid 19th century: from Greek lanthanein 'escape notice' (because it was long undetected in cerium oxide) + -um.

Definition of lanthanum in US English:

lanthanum

nounˈlænθənəmˈlanTHənəm

The chemical element of atomic number 57, a silvery-white rare earth metal.
Example sentencesExamples
- Oxalate efflux could not be triggered by treatment with the trivalent cation lanthanum or by phosphorus deficiency, indicating that the efflux was specific to the Al treatment.
- It belongs to the family known as the lanthanides, named after the first member of that series, lanthanum.
- Green light is also emitted from some lanthanide elements: lanthanum, cerium, and terbium.
- Samarium is a rare earth element, one of the elements that occupy the space in Row 6 of the periodic table between lanthanum and hafnium.
- Its chemical properties are similar to those of lanthanum, the element above it in the periodic table.

Origin

Mid 19th century: from Greek lanthanein ‘escape notice’ (because it was long undetected in cerium oxide) + -um.

单词	lanthanum
释义	Definition of lanthanum in English: lanthanum noun ˈlanθənəmˈlænθənəm mass noun The chemical element of atomic number 57, a silvery-white rare earth metal. Example sentencesExamples Green light is also emitted from some lanthanide elements: lanthanum, cerium, and terbium. Oxalate efflux could not be triggered by treatment with the trivalent cation lanthanum or by phosphorus deficiency, indicating that the efflux was specific to the Al treatment. Its chemical properties are similar to those of lanthanum, the element above it in the periodic table. It belongs to the family known as the lanthanides, named after the first member of that series, lanthanum. Samarium is a rare earth element, one of the elements that occupy the space in Row 6 of the periodic table between lanthanum and hafnium. Origin Mid 19th century: from Greek lanthanein 'escape notice' (because it was long undetected in cerium oxide) + -um. Definition of lanthanum in US English: lanthanum nounˈlænθənəmˈlanTHənəm The chemical element of atomic number 57, a silvery-white rare earth metal. Example sentencesExamples Oxalate efflux could not be triggered by treatment with the trivalent cation lanthanum or by phosphorus deficiency, indicating that the efflux was specific to the Al treatment. It belongs to the family known as the lanthanides, named after the first member of that series, lanthanum. Green light is also emitted from some lanthanide elements: lanthanum, cerium, and terbium. Samarium is a rare earth element, one of the elements that occupy the space in Row 6 of the periodic table between lanthanum and hafnium. Its chemical properties are similar to those of lanthanum, the element above it in the periodic table. Origin Mid 19th century: from Greek lanthanein ‘escape notice’ (because it was long undetected in cerium oxide) + -um.
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