Antiarch – Definition & Meaning

The word antiarch is not a commonly used term, and many people may not be familiar with it. However, it is still important to understand its meaning and significance. In this article, we will explore the definition, origin, and associations of antiarch, as well as its synonyms and antonyms.


Antiarch is a noun that refers to a primitive fish that lived during the Devonian period, around 400 million years ago. It is also used in architecture to describe a column or arch that is opposite or facing away from the main entrance of a building.


The word antiarch comes from the Greek words “anti,” meaning opposite, and “arche,” meaning beginning or origin. It was first used in the field of paleontology to describe a type of fish that had a distinctive armored head and was characterized by its backward-facing fins.

Meaning in different dictionaries

The meaning of antiarch can vary slightly depending on the dictionary. The Merriam-Webster dictionary defines it as “a Devonian fish having the head and trunk covered with bony plates and typically having the dorsal and anal fins placed far back on the body.” The Oxford English Dictionary describes it as “an ancient fish of the Devonian period, characterized by a bony head and backward-facing fins.”


Antiarch is primarily associated with paleontology and architecture. In paleontology, it refers to a specific type of fish that lived during a particular period in history. In architecture, it describes a column or arch that is positioned in a way that is opposite or facing away from the main entrance of a building.


There are not many synonyms for antiarch, as it is a term that is specific to the fields of paleontology and architecture. However, some possible synonyms could include “opposite-facing column” or “backward-facing arch.”


The antonyms of antiarch would depend on the context in which it is being used. In paleontology, the opposite of antiarch might be a more modern type of fish, while in architecture, it could be a column or arch that is facing towards the main entrance of a building.

The same root words

The two root words that make up antiarch are “anti” and “arche.” Some other words that use the same root words include “antipathy,” meaning a strong dislike or aversion, and “archaic,” meaning old-fashioned or outdated.

Example Sentences

  1. The antiarch fish was known for its distinctive armored head and backward-facing fins.
  2. The ancient temple featured an antiarch column that faced away from the main entrance.
  3. The architect decided to include an antiarch arch in the design of the building to create a sense of depth and perspective.
  4. The paleontologist was thrilled to discover the fossilized remains of an antiarch fish during the excavation.
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