azoic

/ə'zouik/

Thân thiện

The azoic rocks of the canyon show no signs of ancient life.

Definition

1. Adjective:
   • Before the appearance of life: Pertaining to a geological era or rock formations that existed before life appeared on Earth.
   • Devoid of life; without organic remains: Used to describe rocks or geological strata that contain no fossils or traces of living organisms.

Usage Examples

• Adjective:
  • The geologist studied the azoic rocks to understand the Earth's early history.
  • Azoic layers in the geological record predate the earliest known fossils.

Advanced Usage

• Scientific Context: The term is primarily used in geology, paleontology, and earth sciences to describe the earliest part of the Precambrian eon.
  • The azoic eon represents the first 600 million years of Earth's history, a time when the planet was lifeless.

Variants and Related Words

• Azoic Era/Eon: A specific term for the earliest, lifeless period of Earth's geological history.
  • The Azoic Eon is followed by the Archean Eon, when life first began to emerge.

Synonyms

• Lifeless: Without life.
• Prebiotic: Existing before the emergence of life.
• Abiotic: Non-living; relating to things not derived from living organisms.

Antonyms

• Biogenic: Produced by living organisms.
• Fossiliferous: Containing fossils.
• Organic: Derived from living matter.

Học thuật

Adjective

1. before the appearance of life
   • azoic rocks contain not organic remains