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Tonian
From Wiktionary, the free dictionary
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English
Etymology
From Ancient Greek τόνος (tónos, “stretch”).
Pronunciation
- (Received Pronunciation) IPA(key): /ˈtəʊ.ni.ən/
- (General American) IPA(key): /ˈtoʊ.ni.ən/
- Rhymes: -əʊniən
Adjective
Tonian (not comparable)
- (geology) Of a geologic period within the Neoproterozoic era from about 1000 to 850 million years ago.
Proper noun
Tonian
- (geology) The Tonian period.
Translations
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Anagrams
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