Phanerozoic

adjective
Phan·​er·​o·​zo·​ic | \ ˌfa-nə-rə-ˈzō-ik How to pronounce Phanerozoic (audio) \

Definition of Phanerozoic

: of, relating to, or being an eon of geologic history that comprises the Paleozoic, Mesozoic, and Cenozoic or the corresponding systems of rocks — see Geologic Time Table

Other Words from Phanerozoic

Phanerozoic noun

First Known Use of Phanerozoic

1930, in the meaning defined above

History and Etymology for Phanerozoic

Greek phanerós "visible, conspicuous" (from phan-, base of phaínomai, phaínesthai "to become visible, come to light, appear" + -eros, adjective suffix) + -o- + -zoic entry 2 — more at fantasy entry 1

Note: The term was introduced by the American geologist George Halcott Chadwick (1876-1953) in "Subdivision of Geologic Time," Bulletin of the Geological Society of America, vol. 41 (1930), pp. 47-48. The name refers to the easily visible fossil records that appear in this eon, in contrast to the earlier period, which Chadwick referred to collectively as the Cryptozoic (see crypto-, -zoic entry 2).

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The first known use of Phanerozoic was in 1930

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Dictionary Entries Near Phanerozoic

phaneroscopy

Phanerozoic

phanerozonate

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Cite this Entry

“Phanerozoic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Phanerozoic. Accessed 9 Aug. 2022.

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