Single-celled, microscopic organisms, which include bacteria, algae and fungi.

Microorganism (small, living organism) capable of producing disease.

Living organisms that are too small to be seen without the aid of a microscope. Often refers to disease-causing microorganisms.

A living organism that cannot be seen by the naked eye and needs the help of a microscope to be seen. The study of microorganisms is called microbiology. They are helpful in digesting food and make possible the normal development of our immune system. Microbes include viruses, bacteria, and parasites, which can cause disease when our immune system can't fight them off.

Microorganisms: any microscopic organism, including bacteria, viruses, unicellular algae and protozoans, and microscopic fungi such as yeasts.

Term used for microscopic organisms. Bacteria are referred to as microbes

tiny living things, such as bacteria, viruses, and fungi, which sometimes cause disease

organisms of microscopic or ultramicroscopic size Minnehaha: Point-Source Pollution

microscopic organisms: bacteria, viruses, molds, fungus, yeast.

a general term to describe the many different kinds of microorganisms which can cause diarrhoea and disease

Microbes are microscopic organisms such as viruses, bacteria and fungi. Disinfectant-cleaners are designed to kill disease-causing microbes.

microscopic life forms, particularly bacteria, archaea, protists and viruses. Despite their minute size, they make the greatest contribution to ocean biomass.

very small living things

Living organisms, such as bacteria, fungi, and viruses that are so tiny they can be seen only through a microscope.

Microscopic organisms such as algae, insects, viruses, bacteria, fungi, and protozoa, some of which cause diseases.

organisms too small to be seen with the naked eye — bacteria, fungi, microscopic algae, protozoa, and viruses — also called microorganisms.

Tiny organisms (including viruses and bacteria) that can only be seen with a microscope.

(syn.: microorganism/ microorganism)

another word for microorganism

Any organism that can be seen only with the aid of a microscope. Also called microorganism.

Single-celled living organisms, such as bacteria and archaea.

minute living organisms, usually one-cell organisms, which include bacteria, protozoa, and fungi.

Minute living organisms, including bacteria, viruses, fungi and protozoa.

in the same way micro-organisms eat garbage, some Pentagon officials believe that microbes can be bread to eat electronics and computer components.

microscopic living organisms, including viruses, bacteria, fungi, and protozoa.

Microscopic living organisms, including bacteria, protozoa and fungi.

tiny life forms such as bacteria, archaea, algae, fungi and protozoa, usually not visible to the naked eye

Organisms so small that a microscope is required to see them. Microbes are also called microorganisms.

Microscopic living plants and animals.