phanerozoic+aeon

См. также в других словарях:

• Phanerozoic aeon — noun the period from about 5,400 million years ago until the present • Syn: ↑Phanerozoic, ↑Phanerozoic eon • Instance Hypernyms: ↑eon, ↑aeon • Part Meronyms: ↑Cenozoic, ↑Cenozoic era, ↑ …   Useful english dictionary

• Phanerozoic — noun the period from about 5,400 million years ago until the present • Syn: ↑Phanerozoic eon, ↑Phanerozoic aeon • Instance Hypernyms: ↑eon, ↑aeon • Part Meronyms: ↑Cenozoic, ↑Cenozoic era …   Useful english dictionary

• Phanerozoic eon — noun the period from about 5,400 million years ago until the present • Syn: ↑Phanerozoic, ↑Phanerozoic aeon • Instance Hypernyms: ↑eon, ↑aeon • Part Meronyms: ↑Cenozoic, ↑Cenozoic era, ↑ …   Useful english dictionary

• aeon — /ee euhn, ee on/, n. 1. (in Gnosticism) one of a class of powers or beings conceived as emanating from the Supreme Being and performing various functions in the operations of the universe. 2. eon. [1640 50; < LL < Gk aión space of time, age] * *… …   Universalium

• Phanerozoic — [ˌfan(ə)rə(ʊ) zəʊɪk] adjective Geology relating to or denoting the aeon covering the whole of time since the beginning of the Cambrian period about 570 million years ago (comprising the Palaeozoic, Mesozoic, and Cenozoic eras). Origin C19: from… …   English new terms dictionary

• Precambrian aeon — noun the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago • Syn: ↑Precambrian, ↑Precambrian eon, ↑Precambrian period • Instance Hypernyms: ↑eon, ↑aeon • Part Meronym …   Useful english dictionary

• Age of Mammals — noun approximately the last 63 million years • Syn: ↑Cenozoic, ↑Cenozoic era • Instance Hypernyms: ↑era, ↑geological era • Part Holonyms: ↑Phanerozoic, ↑Phanerozoic eon, ↑ …   Useful english dictionary

• Cenozoic era — noun approximately the last 63 million years • Syn: ↑Cenozoic, ↑Age of Mammals • Instance Hypernyms: ↑era, ↑geological era • Part Holonyms: ↑Phanerozoic, ↑Phanerozoic eon, ↑ …   Useful english dictionary

• eon — /ee euhn, ee on/, n. 1. an indefinitely long period of time; age. 2. the largest division of geologic time, comprising two or more eras. 3. Astron. one billion years. Also, aeon. [see AEON] * * * I Long span of geologic time. In formal usage,… …   Universalium

• Precambrian eon — noun the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago • Syn: ↑Precambrian, ↑Precambrian aeon, ↑Precambrian period • Instance Hypernyms: ↑eon, ↑aeon • Part Meron …   Useful english dictionary

• Precambrian period — noun the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago • Syn: ↑Precambrian, ↑Precambrian eon, ↑Precambrian aeon • Instance Hypernyms: ↑eon, ↑aeon • Part Meronyms …   Useful english dictionary