Atrial – Definition & Meaning

Atrial is a term that is commonly used in the medical field, particularly in relation to the heart. It is a term that is used to describe the upper chambers of the heart, which are responsible for receiving blood from the body and pumping it into the ventricles. However, atrial can also have different meanings and associations depending on the context in which it is used. In this article, we will explore the various definitions and meanings of atrial.


Atrial is an adjective that is used to describe anything that is related to or located in the atrium, which is the upper chamber of the heart. It can also be used to describe anything that is related to the ear, which is another meaning of the word.


The term atrial comes from the Latin word “atrium,” which means “entry hall” or “vestibule.” The word was first used in the medical field in the early 20th century to describe the upper chambers of the heart.

Meaning in different dictionaries

According to the Merriam-Webster dictionary, atrial means “of, relating to, or located in an atrium.” The Oxford English Dictionary defines atrial as “relating to the atrium of the heart or the ear.”


Atrial is most commonly associated with the heart, specifically the upper chambers of the heart. It is also associated with medical conditions such as atrial fibrillation, which is a type of irregular heartbeat that can lead to stroke or heart failure.


Some synonyms for atrial include auricular, cardiac, and ventricular.


There are no direct antonyms for atrial, but the opposite of the upper chambers of the heart would be the lower chambers, or ventricles.

The same root words

The root word of atrial is “atrium,” which is also the root word for words such as atrioventricular, which refers to the connection between the atria and ventricles of the heart.

Example Sentences

  • The patient was diagnosed with atrial fibrillation and was prescribed medication to control their heart rate.
  • The surgeon performed an atrial septal defect repair to fix a hole in the wall between the two upper chambers of the heart.
  • The audiologist examined the patient’s atrial canal to determine the cause of their hearing loss.
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