azoic era
A geologic era embracing the first four or five billion years of earth history, antedating any record of organized life forms.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • Azoic Age — Azoic Age, Azoic Age, Azoic Era, Azoic Period and Azoic Eon were terms used before 1950 to describe the age of rocks formed before the appearance of life in the geologic sequence. The word Azoic is derived from the Greek a meaning without and… …   Wikipedia

  • azoic — azoic1 /euh zoh ik, ay /, adj. Geol. (formerly) noting or pertaining to the Precambrian Era, esp. that part formerly believed to precede the first appearance of life; Archean. Cf. Eozoic. [1840 50; < Gk ázo(os) lifeless (see AZO ) + IC] azoic2 /a …   Universalium

  • azoic — a·zo·ic || É™ zəʊɪk adj. of or pertaining to the Precambrian era (geological period preceding the first appearance of life on Earth) …   English contemporary dictionary

  • Timetable of the Precambrian — This is a timeline of geological and relevant astronomical events on Earth before the Cambrian period started. This covers 88% of the duration of the Earth. The dates given are based on the best current scientific evidence and where possible are… …   Wikipedia

  • arhaic — ARHÁIC, Ă, arhaici, ce, adj., s.n. 1. adj. Care aparţine sau este caracteristic unor vremuri extrem de îndepărtate din trecut. ♦ (Despre cuvinte, expresii, construcţii etc.) Foarte vechi, ieşit de mult din uz. 2. s.n. Cea mai veche eră geologică …   Dicționar Român

  • Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… …   Wikipedia

  • Escala temporal geológica — Saltar a navegación, búsqueda La escala temporal geológica es utilizada por geólogos y otros científicos para describir la cronología y las relaciones entre los eventos que han ocurrido durante la historia de la Tierra. La tabla de períodos… …   Wikipedia Español

  • Pre|cam|bri|an — Pre Cam|bri|an or Pre|cam|bri|an «pree KAM bree uhn», noun, adjective. –n. 1. the earliest geological era, including all the time before the Cambrian; the Azoic, Archeozoic, and Proterozoic eras together: »The Pre Cambrian includes all the… …   Useful english dictionary

  • Pre-Cam|bri|an — or Pre|cam|bri|an «pree KAM bree uhn», noun, adjective. –n. 1. the earliest geological era, including all the time before the Cambrian; the Azoic, Archeozoic, and Proterozoic eras together: »The Pre Cambrian includes all the history of the earth… …   Useful english dictionary

  • Artistas de música electrónica alternativa e industrial — Anexo:Artistas de música electrónica alternativa e industrial Saltar a navegación, búsqueda Una lista de artistas, dentro de los generos musicales de industrial, dark electro, EBM, darkwave, aggrotech, futurepop, electro industrial, y… …   Wikipedia Español

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”