Acrosomal – Definition & Meaning

The term “acrosomal” is a scientific term that is often used in the field of biology. It refers to a specific structure found in the head of sperm cells that is essential for fertilization. In this article, we will explore the definition and meaning of acrosomal, as well as its origin, associations, synonyms, antonyms, and usage in different contexts.


The term “acrosomal” refers to the acrosome, which is a specialized structure found in the head of sperm cells. The acrosome is a membrane-bound vesicle that contains enzymes that are necessary for fertilization. These enzymes help the sperm penetrate the outer layer of the egg cell, allowing for fertilization to occur.


The term “acrosomal” is derived from the Greek word “akros,” meaning “highest” or “topmost,” and “soma,” meaning “body.” This reflects the location of the acrosome at the top of the sperm cell’s head.

Meaning in different dictionaries

In the Merriam-Webster dictionary, “acrosomal” is defined as “of or relating to the acrosome.” The Oxford English Dictionary defines it as “relating to or denoting the acrosome of a sperm cell.”


The acrosome is a crucial structure for fertilization, as it contains enzymes that allow the sperm to penetrate the outer layer of the egg cell. It is also associated with male fertility, as abnormalities in the acrosome can lead to infertility.


Some synonyms for “acrosomal” include “acrosomic” and “acrosomal vesicle.”


There are no direct antonyms for “acrosomal,” as it is a specific term that refers to a particular structure in sperm cells.

The same root words

The root word “acro” is also found in other scientific terms, such as “acromegaly” (a disorder caused by excess growth hormone) and “acrophobia” (an extreme fear of heights).

Example Sentences

  1. The acrosomal enzymes in the sperm cell are essential for fertilization to occur.
  2. Abnormalities in the acrosome can lead to male infertility.
  3. The acrosomal vesicle contains enzymes that break down the outer layer of the egg cell.
  4. The acrosomal reaction is triggered when the sperm comes into contact with the egg cell.
  5. The acrosomal cap is the portion of the sperm cell that contains the acrosome.
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