Wikipedia:

Plasmodium

Summary:

a genus of parasitic protists. Infection by these organisms is known as malaria. The genus Plasmodium was created in 1885 by Marchiafava and Celli. Currently over 200 species of this genus are recognized and new species continue to be described. Of ...  (41 of 8891 words, 1 image)

Link:

http://en.wikipedia.org/wiki/Plasmodium  [cite]

Britannica:

plasmodium

Summary:

in fungi, a mobile multinucleate mass of cytoplasm without a firm cell wall. A plasmodium is characteristic of the vegetative phase of true slime ...  (24 of 100 words)

Link:

http://www.britannica.com/EBchecked/topic/463627/plasmodium  [cite]

Merriam-Webster:

plasmodium | plasmodia [plural]

Summary:

a motile multinucleate mass of protoplasm resulting from fusion of uninucleate amoeboid cells | an organism (as a stage of a slime mold) that consists ...  (24 of 74 words, 4 senses, 1 etymology, pronunciation)

Link:

http://www.merriam-webster.com/dictionary/plasmodium  [cite]

Encarta:

plasmodium | plasmodia [plural] | plasmodial [adjective]

Summary:

a mass of protoplasm containing many nuclei that is a stage in the life cycle of some organisms, especially slime molds | a parasitic protozoan, ...  (24 of 72 words, 2 senses, 1 etymology, pronunciation)

Link:

http://encarta.msn.com/dictionary 1861738725/definition.html  [cite]

Random House:

plasmodium | plasmodia [plural]

Summary:

[biology] an ameboid, multinucleate mass or sheet of cytoplasm characteristic of some stages of organisms, as of myxomycetes or slime molds. | any ...  (22 of 42 words, 2 senses, pronunciation)

Link:

http://dictionary.infoplease.com/plasmodium  [cite]

Columbia:

plasmodium

Summary:

name for a stage in the life cycle of a slime mold. Also, Plasmodium is the name given to the genus of the protozoan parasite that causes malaria.  (28 of 30 words)

Link:

http://www.infoplease.com/ce6/sci/A0839308.html  [cite]

Wiktionary:

plasmodium | plasmodia [plural]

Summary:

[biology] A mass of cytoplasm, containing many nuclei, created by the aggregation of amoeboid cells of slime molds during their vegetative phase  (22 of 23 words)

Link:

http://en.wiktionary.org/wiki/plasmodium  [cite]