gigannum

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English

Noun

gigannum (plural gigannums)

  1. Rare form of giga-annum (gigayear, a billion years).
    • 2004, Jeffrey S. Kargel, Mars: A Warmer, Wetter Planet, →ISBN, pages xxxii–xxxiii:
      Grappling with time – from the nanoseconds of chemical reaction relaxation times to four gigannums of planetary convulsions – is something that actually unites geologists, planetary scientists, and astronomers (including cosmologists).
    • 2014, Drew H. Abney et al., “Joint perceptual decision-making: a case study in explanatory pluralism”, in Journal of Theoretical and Philosophical Psychology, →DOI:
      On this definition the temporal scale of neural activity tends to emphasize a milliseconds-to-seconds range, while the temporal scale of geology tends to emphasize a kiloannums-to-gigannums (thousands to billions of years) range.
    • 2022, Sulgiye Park, Terence P. McNulty, Rodney C. Ewing, “Critical metal resources in Democratic People’s Republic of Korea”, in International Geology Review, →DOI:
      The Sakju and Jongju intrusives are alkali intrusive complexes consisting of alkali pyroxenite, nephelinite, and various syenites, dating back to ~1.89–1.83 Gigannum (Ga) (Kim et al. 2016b; Lee et al. 2021b).