Autoigniting – Definition & Meaning

Autoigniting is a term that is often used in the field of automotive engineering and chemistry. It refers to the process of a substance igniting or catching fire spontaneously, without any external ignition source. This phenomenon can be dangerous and can cause fires or explosions, making it an important concept to understand.


Autoigniting is defined as the process of a substance igniting or catching fire spontaneously, without any external ignition source. This can occur when a substance reaches a certain temperature or pressure, or when it comes into contact with another substance that is capable of initiating combustion.


The term autoigniting comes from the Latin words “auto,” meaning “self,” and “ignis,” meaning “fire.” The concept of autoignition has been known for centuries, but it was not until the development of modern chemistry and engineering that it was fully understood and studied.

Meaning in different dictionaries

The term autoigniting is not commonly found in most dictionaries, but it is defined in technical dictionaries and scientific literature. The Oxford English Dictionary defines it as “the spontaneous ignition of a substance due to internal heat or chemical reaction.” Other technical dictionaries provide similar definitions.


Autoigniting is often associated with the combustion of fuels, such as gasoline or diesel, in internal combustion engines. It is also associated with the spontaneous combustion of certain materials, such as oily rags or hay bales, which can ignite without any external spark or flame.


Synonyms for autoigniting include spontaneous combustion, self-ignition, and self-heating.


There are no direct antonyms for autoigniting, but the opposite concept would be a substance that does not ignite or burn easily.

The same root words

The root words “auto” and “ignis” are found in many other words, such as automobile, automatic, ignite, ignition, and igneous.

Example Sentences

  1. The oily rags in the garage were a fire hazard because they were prone to autoigniting.
  2. The engine was designed to prevent autoignition of the fuel, which could cause engine damage.
  3. The chemical reaction caused the substance to autoignite, resulting in a small explosion.
Like this post? Please share to your friends:
Words Wiki
Leave a Reply

;-) :| :x :twisted: :smile: :shock: :sad: :roll: :razz: :oops: :o :mrgreen: :lol: :idea: :grin: :evil: :cry: :cool: :arrow: :???: :?: :!: