Wiktionary(0.00 / 0 votes)Rate this definition: 1  sergeant(Noun) UK army rank with NATO code OR-6, senior to corporal and junior to warrant officer ranks. 2  sergeant(Noun) The highest rank of noncommissioned officer in some non-naval military forces and police.
Organism: is an individual living thing, such as a plant, animal, bacterium, protest, or fungus. An organism has a body made up of smaller parts that work together. There are many different organisms. Some scientist estimate there to be as many as 100,000 different organisms on Earth. Sometimes organisms are grouped by the environment they live in. For example, marine organisms live in the ocean.
Organism. An individual of some type of life form, such as a plant, an animal, or a microorganism. Mentioned in: Antibiotics, Antihelminthic Drugs, Antimalarial Drugs, Urinary Anti-Infectives, Vaginal Pain. (År'gÄ-nizm).