Definition of Atomic number 90

1. Noun. A soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands.

Exact synonyms: Th, Thorium
Generic synonyms: Metal, Metallic Element
Specialized synonyms: Radiothorium, Thorium-228
Substance meronyms: Monazite, Thorite
Derivative terms: Thoriate

Lexicographical Neighbors of Atomic Number 90

atomic number 77
atomic number 78
atomic number 79
atomic number 8
atomic number 80
atomic number 81
atomic number 82
atomic number 83
atomic number 84
atomic number 85
atomic number 86
atomic number 87
atomic number 88
atomic number 89
atomic number 9
atomic number 90 (current term)
atomic number 91
atomic number 92
atomic number 93
atomic number 94
atomic number 95
atomic number 96
atomic number 97
atomic number 98
atomic number 99
atomic physics
atomic pile
atomic power
atomic reactor
atomic spectrum

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