An organism of microscopic or submicroscopic size Bacteria and protozoans are microorganisms
Microscopic one- or multi-celled organisms, such as bacteria, viruses, yeasts, algae, fungi and protozoans Microorganismes
The term applied to all microscopic forms of life: bacteria, viruses, rickettsia, yeasts, molds, and protozoa
Microscopically small living organisms that digest decomposable materials through metabolic activity Microorganisms are active in the composting process
Living cells seen only with the aid of a powerful microscope A general term referring to bacteria, molds and yeasts
Microscopic life forms that require energy, carbon, and small amounts of inorganic elements to grow and multiply
include algae, bacteria, mold and fungus Control of microorganisms is the reason pool and spa water require continuous sanitizing with chemicals or methods such as chlorine, bromine, biguanide, algaecides, ozone, ionization, etc
Tiny living organisms that can be seen only with the aid of a microscope Some microorganisms can cause acute health problems when consumed in drinking water Also known as microbes
Are very small animals and plants that are too small to be seen by the naked eye and must be observed using a microscope Microorganisms in water include algae, bacteria, viruses, and protozoa Algae growing in surface waters can cause off-taste and odor by producing the chemicals MIB and geosmin Certain types of bacteria, viruses, and protozoa can cause disease in humans Bacteria are the most common microorganisms found in treated drinking water The great majority of bacteria are not harmful In fact, humans would not be able to live without the bacteria that inhabit the intestines However, certain types of bacteria called coliform bacteria can signal the presence of possible drinking water contamination
Living organisms that can be seen individually only with the aid of a microscope
A diverse group of simple life forms including protozoans, algae, bacteria, diatoms, plankton, fungi and viruses
Included are bacteria, fungi, actinomycetes, algae, protozoa, beneficial nematodes, and yeast which exist to breakdown organic matter into mineral elements
Yeasts molds, bacteria, and viruses and includes, but is not limited to, species having public health significance The term "undesirable microorganisms" includes those microorganisms that are of public health significance, that subject food to decomposition, that indicate that food is contaminated with filth, or that otherwise may cause food to be adulterated within the meaning of the act Occasionally in these regulations, FDA used the adjective "microbial" instead of using an adjectival phrase containing the word microorganism [From §110 3(i)]
Tiny living organisms that can be seen only with the aid of a microscope Some microorganisms can cause acute health problems when consumed in water Also known as microbes