relict

/'relikt/

Thân thiện

A relict species of fern grows in the isolated mountain valley.

Definition

1. Noun:
   • A geological feature that is a remnant of a pre-existing formation after other parts have disappeared: In geology, a "relict" is a physical structure or landform that remains after the surrounding or original features have been eroded or otherwise removed.
   • An organism or species surviving as a remnant of an otherwise extinct flora or fauna in an environment much changed from that in which it originated: In biology and ecology, a "relict" refers to a living species or population that persists in a small area, representing the last survivors of a once widespread group, now living in an environment different from its original one.

Usage Examples

• Noun (Geological):

  • The isolated mesa is a relict of a much larger plateau that eroded over millions of years.
  • Scientists study these relict dunes to understand the region's ancient climate.

• Noun (Biological):

  • The ginkgo tree is often considered a living fossil, a relict from a time when its relatives were common.
  • The species is a glacial relict, surviving only in a few cold mountain lakes after the ice sheets retreated.

Advanced Usage

• "Relict population": A specific group of organisms that are the surviving remnants of a formerly more widespread species.

  • Conservation efforts focus on protecting the relict population of these rare butterflies.

• "Relict sediment": Sedimentary material that remains in place from a previous geological period or environment.

  • The layer of relict sediment provides clues about the ancient river system.

Variants and Related Words

• Relictual (adj): Pertaining to or characteristic of a relict.
  • The forest has a relictual community of plants.

Synonyms

• Remnant: A small remaining quantity of something; a surviving trace.
• Survivor: One that remains alive, especially after others have died.
• Vestige: A trace of something that is disappearing or no longer exists.

Notes on Meaning

• The term "relict" is highly specialized and is primarily used in scientific contexts, specifically geology and biology/ecology. It is not commonly used in everyday conversation.
• In historical or very formal contexts, "relict" was an archaic term for a widow. However, this usage is now obsolete and should not be confused with the modern scientific meanings explained above. The core modern concept is that of a surviving remnant from the past.

Học thuật

Noun

1. geological feature that is a remnant of a pre-existing formation after other parts have disappeared
2. an organism or species surviving as a remnant of an otherwise extinct flora or fauna in an environment much changed from that in which it originated