any organism too small to be viewed by the unaided eye

A living organism discretely invisible to the unaided eye.

a microscopic organism, many of which can cause infections and disease

an organic carbon-based organism that are not visible with the naked eye; this includes bacteria and viruses.

Any microscopic animal or plant-like organism including bacteria, yeasts, viruses and single-celled algae.

a very small organism of microscopic size

A life-form that can only be seen with a microscope.

a living organism that is too small to be seen with the naked eye

Dead or alive bacteria, viruses, fungi and single-cell organisms.

An organism too small to be seen with the unaided eye, such as bacteria, viruses, unicellular algae, and protozoans.

a living being too small to be seen by the naked eye, often aiding in the decomposition process.

any tiny, single-celled organism (such as a bacterium, virus, or fungus)

a living thing which on its own is too small to see without a microscope

These are microscopic plants and animals. They exist in soil for the purpose of breaking down organic matter into basic mineral elements. (See mineralization) They include bacteria, fungi, actinomycetes, algae, protozoa, yeast, germs, ground pearls, and nematodes.

Any organism that can only be seen with a microscope or electron microscope. Includes: Bacteria Fungi Prions Protozoa Viruses Yeasts

a microscopic organism, unable to be seen with the naked eye.

Minute, microscopic, or submicroscopic living organism; includes bacteria, fungi, and protozoa. Viruses are often included in this category, but they are incapable of growth and reproduction outside host cells, so that some experts insist they should not be classified as organisms. Minimum inhibitory concentration: Lowest concentration of antibiotic that prevents growth of a bacterium.

a microscopic organism eg. A bacterium, virus or fungus.

Microscopic plants or animals that they can be seen only with a microscope.

Germs, bacteria, viruses, yeasts, molds, and fungi are capable of causing disease. These are biological hazards.

A general term for bacteria, molds, fungus, or viruses, that can be seen only with a microscope.

Living organisms of microscopic size, such as bacteria.

a living organism that is so small it can only be seen with the aid of a microscope

a tiny organism made of one cell that is usually too small to be seen without using a microscope (a device that makes things appear larger)

a very small (micro-) organism

A microorganism is any organism too small to be seen by the naked eye, e.g. bacteria, viruses, protozoa, some fungi, and some algae.

An animal or plant too small to be seen without a microscope.

A tiny animal or plant too small to be seen with the naked eye, which may or may not be a cause of disease. Types include bacteria, fungi and viruses.

Dead or alive bacteria, viruses, fungi and singlecell organisms.

any organism too small to be visible to the naked eye.

An organism that is visible only under a microscope, such as protozoa, bacteria, fungi and viruses.

A minute organism; microbes, bacteria, cocci, viruses, molds, etc., are microorganisms.

Français] A general term for a unicellular or multicellular microscopic organism. Classifications of microorganisms include algae, bacteria, fungi, protozoa, and viruses.

a very small plant, animal or bacterium; some microorganisms, like larger organisms, can be hurt by oil spills; some microorganisms actually break oil down into less harmful substances.

A living thing, such as bacteria or yeast, visible only with a microscope.

Minute living body not perceptible to the naked eye. Example: bacterium.

A microscopic organism, especially a bacterium, fungus, or protozoan.

A mocroscopically small organism, such as a virus, bacterium, fungus or protozoan.

An animal or plant of microscopic size.

An organism that can be seen only through a microscope. Microorganisms include bacteria, protozoa, algae, and fungi. Viruses are sometimes classified as microorganisms, although they are not considered living organisms.

means a form of life that can be seen only with a microscope; including bacteria, viruses, yeast, and single-celled animals.

an organism of microscopic or smaller size; usually refers to bacteria, yeast and fungi.

A minute living organism, usually microscopic, such as bacteria, viruses, molds, yeasts, rickettsiae, and protozoa.

Any microscopic organism (includes bacteria, protozoa, and viruses)

Microscopically small organisms such as viruses, bacteria, protozoa and fungi. Bacteria and fungi are principally responsible for decay in food.

Organism, usually single celled, too small to be observed without a microscope.

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

any organism that can only be seen with a microscope; protozoans, bacteria, fungi, and viruses are examples of microorganisms.

ny organism so small it can only be seen by a microscope especially bacteria, viruses, and fungi

A microscopic organism including bacteria, protozoans, yeast, viruses and, algae.

an organism of microscopic size, such as bacterium

also called microbe, an organism of microscopic size.

An organism that is too small to be studied without the aid of a microscope.

An organism that needs to be magnified in order to be seen by the human eye.

myKe-Kroh-ORR-GaN-izm) A microscopic plant or animal.

check microbes.

A simple form of life with microscopic dimensions; microbes.

Any living thing that is too small to be seen with the naked eye. John was only able to see the water microorganisms by using the microscope.

microscopic organism, such as fungi or bacteria, that breaks down the organic waste in soil.

Microscopic organisms, either plant or animal, invisible to or barely visible to the naked eye. Examples are bacteria, algae, fungi and virus.

Any organism of microscopic or ultramicroscopic size.

One-celled organisms (such as a viruses, bacteria, and protozoa). Sometimes fungi are also included.

Living organisms or living things (plants or animals) so small in size that they are only visible by the aid of a microscope.

An organism of microscopic or submicroscopic size. Microorganisms can destroy contaminants by using them as "food sources" for their own growth and reproduction.

A microscopic living agent, often a producer of disease.

An organism that can be seen only through a microscope. Microorganisms include bacteria, protozoa, algae, and fungi. Although viruses are not considered living organisms, they are sometimes classified as microorganisms.

A living individual of microscopic size, such as a bacterium or protozoan.

An organism that is too small to be seen with the naked eye, such as a bacterium, virus, or fungus.

microscopically small organism; unicellular plant, animal or bacterium

Simply, an extremely tiny (microscopic or ultramicroscopic) living being, such as bacteria, viruses, or cysts.

Small, one-celled or multicellular organisms that can only be viewed with a microscope.

A microscopic organism, including bacteria, protozoa, yeasts, viruses and algae.

A tiny organism such as a virus that can only be seed under a microscope.

A living organism invisible or barely visible to the naked eye and generally observable only through a microscope. Also called a microbe. Microorganisms are generally considered to include algae, bacteria, fungi, protozoa, and viruses.

(n) An organism which is so small that it can be seen only under a microscope

an organism of microscopic size; especially a bacterium or protozoan.

Extremely small organism that can only be seen using a microscope.

A living organism too small to be seen with the naked eyel includes bacteria, fungi, protozoa, algae, and viruses.

living organisms that are so small they can only be observed through a microscope.

A animal or plant of microscopic size.

A microorganism or microbe is an organism that is microscopic (too small to be visible to the human eye). The study of microorganisms is called microbiology. Microorganisms can be bacteria, fungi, archaea or protists, but not viruses and prions because they are generally classified as non-living.