Definition of Alvarez, Luis Walter in English:

Alvarez, Luis Walter

Line breaks: Luis Wal¦ter Al|varez
Pronunciation: /alˈvɑːrɛz
  • (1911–88), American physicist. In 1980 Alvarez and his son identified iridium in sediment from the Cretaceous-Tertiary boundary and proposed that this resulted from a catastrophic meteorite impact that may have resulted in the extinction of the dinosaurs.

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Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
(in science fiction) navigation in outer space