What does colonizing mean?
'Colonizing' is the present participle and gerund of the verb 'to colonize', meaning to establish control over a territory or people by settling it — typically involving political domination, economic exploitation, and the displacement of existing inhabitants. The word is most often encountered in historical and political contexts, describing the expansion of powers such as Britain, France, Spain, and Portugal across Africa, Asia, and the Americas from roughly the fifteenth century onward. Because of this history, the term carries strong negative connotations today: it evokes conquest, inequality, and cultural erasure rather than neutral settlement. Beyond human affairs, 'colonizing' has a second, entirely neutral life in biology and ecology, where it describes how plants, animals, or microbes spread into and populate new habitats — lichens colonizing bare rock, or bacteria colonizing a surface. More recently it has entered futuristic discourse about humans colonizing other planets. This range makes it a versatile word spanning history, science, and speculation alike.
verbThe present participle of the verb 'colonize': to establish a colony in or among (an area or people), taking control of it politically, economically, or demographically; also used of organisms spreading into and occupying new habitats.
- To take political and economic control of an area or its people, typically by establishing settlers there (e.g. European powers colonizing the Americas).
- (Of plants, animals, or microorganisms) to spread into and establish a population in a new habitat or area.
- To move into and occupy a space, domain, or sphere of activity, often figuratively (e.g. colonizing public discourse).
"European powers spent centuries colonizing distant territories across Africa, Asia, and the Americas."
"Britain began colonizing Australia in the late eighteenth century."
"Within months of the volcanic eruption, lichens were already colonizing the bare rock."
The same word that describes empires seizing continents also describes ants moving into your garden — and, increasingly, our plans to settle Mars.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of colonizing
'Colonizing' derives from 'colony', which comes from the Latin 'colonia', meaning a settlement or landed estate — originally established for Roman citizens, especially veterans. That noun stems ultimately from the Latin verb 'colere', meaning to till, cultivate, inhabit, or dwell. English adopted 'colony' via French in the late Middle Ages, and the verb 'colonize' appeared in English around the early seventeenth century as overseas settlement expanded. Words sharing the root include 'cultivate', 'culture', and 'agriculture', all tracing back to the same Latin sense of dwelling upon and working the land.
Related word forms
How colonizing is actually used
'Colonizing' is the -ing form of the transitive verb 'colonize', so it appears in continuous tenses ('was colonizing') and as a gerund/noun-like form ('Colonizing distant planets remains speculative'). It carries strongly negative connotations in discussions of historical empire, where it is associated with exploitation and displacement of indigenous peoples; in ecological contexts the term is neutral and descriptive. British spelling uses '-ise' (colonising) alongside the American '-ize'.
Easily confused with colonizing
'Colonnade' is a row of columns supporting a roof or entablature, while 'colonizing' refers to establishing control over territory or habitats.