Definition: In biological and environmental science, "colonising" refers to a process in which an organism (often referred to as a host) colonizes another organism (host) or a living environment. This can occur through various means such as direct contact, colonization by other organisms, or the exchange of genetic material. For example, in plant biology, plants that colonise other plants may be known as colonizers. In animal biology, animals that colonise other animals may be known as colonists or colon