Pronunciation: [ɪnvˈe͡ɪʒən] (IPA) 
The word "invasion" (/ɪnˈveɪʒən/) is spelled with the letter "i" followed by "n". The "v" is pronounced as /v/ and is followed by "a" pronounced as /eɪ/. The following "s" is pronounced as /s/, followed by "i" pronounced as /ɪ/ and "o" pronounced as /ʊ/. The final "n" is silent. The spelling of this word accurately reflects its pronunciation, making it easy for English learners and speakers to understand and use it correctly.
Invasion, as per its dictionary definition, refers to a forceful and unwelcome entry into a territory or domain, typically carried out by a group or army of people with the intent to conquer, dominate, or exert control over the occupied territory. It involves the act of intrusion and encroachment upon another's land or space, often disregarding the consent or rights of the inhabitants.
This term is commonly associated with military operations that involve the deliberate movement of troops, vehicles, or equipment from one region or country to another, with intentions to seize and occupy the new territory. Invasions are characterized by hostile actions taken against the defending forces or inhabitants, such as engaging in combat, capturing key strategic locations, or establishing control over natural resources and infrastructure.
However, invasions are not limited to military contexts alone. The term can also be used in various other contexts, such as the invasion of privacy, wherein one's personal space or information is intruded upon without consent or authorization. Additionally, it can pertain to the spread and rapid proliferation of something undesirable or unwelcome, as in the case of invasive species that disrupt the ecosystem in a foreign environment.
In summation, an invasion involves a forceful and often coercive entry into a territory or domain, aiming to assert control, conquer, or impact the invaded entity, making it an integral term in military, legal, and cultural spheres alike.
The beginning or incursion of a disease.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
• The entrance of a hostile army into a country for the purpose of conquest; an attack on the rights of another.
• See invade.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
The word "invasion" originates from the Latin term "invasio", which is derived from the verb "invadere". "Invadere" consists of two Latin words: "in", meaning "into", and "vadere", meaning "to go". Thus, "invadere" gives the meaning of "to go into". Over time, "invasio" evolved into the Old French term "invasion", which ultimately entered the English language with the same meaning.
