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Now updated for CSW15. New words, if any, and new inflections of existing words, are shown in red.


actinomycete a filamentous microorganism like both bacteria and fungi.
actinomycetous of or like an actinomycete, a filamentous microorganism like both bacteria and fungi.
aerobium (Lat.) an aerobe.
aeroplankton minute organisms carried in the air.
agamont in protozoans, a mature trophozoite about to reproduce by schizogony.
ameba (Lat.) a single-celled aquatic protozoan, characterized by a constantly changing shape.
ameban relating to an ameba.
amebean relating to an ameba.
amebic relating to an amoeba.
amoeba (Lat.) a single-celled aquatic protozoan, characterized by a constantly changing shape.
amoebaean relating to an ameba.
amoeban relating to an amoeba.
amoebic relating to an amoeba.
amoeboid resembling an amoeba; changing in shape like an amoeba.
animalcule a small animal, as a fly, spider, etc.
animalculum a microscopic animal.
archaea an order of prokaryootic microorganisms. No -S.
archaeal relating to the archaea, an order of prokaryootic microorganisms.
archaean any member of the archaea, an order of prokaryootic microorganisms.
archaeon relating to the archaea, an order of prokaryootic microorganisms.
archean relating to the archaea, an order of prokaryootic microorganisms.
chlamydia any microorganisms of the genus Chlamydia, resembling bacteria and viruses.
ciliate possessing cilia (noun) a member of the Ciliata, a subclass of Protozoa
ciliately (Adv.) CILIATE, possessing cilia.
coccidium a parasitic protozoan of the order Coccidia.
coenocyte a multinucleate unicellular organism in slime molds, fungi and algae.
coenocytic of or like a coenocyte, a multinucleate unicellular organism in slime molds, fungi and algae.
crithidial relating to the flagellate genus Crithidia.
cryptosporidium any of a genus of protozoans parasitic in the gut of vertebrates including humans and sometimes causing diarrhea.
endameba (Lat.) a parasitic amoeba.
endamebic like an endameba, a parasitic amoeba.
endamoeba (Lat.) a parasitic amoeba.
endamoebic like an endamoeba, a parasitic amoeba.
endozoon an internal parasite.
entameba (Lat.) an amoeba that causes amoebic dysentery.
entamoeba (Lat.) an amoeba that causes amoebic dysentery.
entoproct any of a phylum of animals related to Bryozoans.
entozoan an internal parasite.
entozoon an internal parasite.
euglena a photosynthesizing, motile protozoan.
euglenid a photosynthesizing, motile protozoan.
euglenoid any member of the Euglenia, a genus of aquatic unicellular organisms.
foram one of the Rhizopoda, amoebae and rotarians moving and taking in food with pseudopods.
foraminifer a unicellular microorganism with a calcareous shell through which pseudopods project.
foraminifera an order of rhizopod protozoa.
foraminiferal of or like a foraminifer.
gastrotrich any minute aquatic multicellular animal of the phylum Gastrotricha.
giardia a species of parasite.
gonococcal relating to gonococci.
gonococcic relating to gonococci.
gregarine a member of the Gregarinida, a group of parasitic insects, molluscs and crustaceans.
gregarinian of or like a gregarine.
haematozoon any microorganism, esp a protozoan, that is parasitic in the blood.
heliozoan related to the Heliozoa, sun-animalcules, an order of Protozoa; (noun) a member of the Heliozoa.
heliozoic relating to the Heliozoa, sun-animalcules, an order of Protozoa.
hematozoon a protozoan that is parasitic in the blood.
infusoria a class of protozoa found in stagnant water.
infusorial composed of or containing infusoria.
infusorian an obsolete term for small aquatic organisms, rotifers, algae etc.
infusory composed of or containing infusoria; (noun) an infusion.
leishmania any protozoon of the genus Leishmania.
leishmanial of or like leishmania, any protozoon of the genus Leishmania.
leptospire any of a genus of slender aerobic spirochetes.
mastigophoran any protozoan having one or more flagella.
mastigophore any protozoan having one or more flagella.
mastigophoric like a mastigophoran; whip-bearing.
mastigophorous like a mastigophoran; whip-bearing.
merozoite a young trophozoite resulting from the division of a schizont.
mesozoan a type of parasite.
microbe a minute life form.
microbial of or like a microbe.
microbian of or like a microbe.
microbic of or like a microbe.
microbiome the microscopic organisms, such as bacteria, which inhabit the human body in a symbiotic relationship.
microfilaria the minute larval form of a filaria.
microfilarial of or like a microfilaria.
moner a hypothetical simplest protozoan, the organism on which Hackel's version of the evolution theory is based.
moneran a hypothetical simplest protozoan, the organism on which Hackel's version of the evolution theory is based.
moneron a hypothetical simplest protozoan, the organism on which Hackel's version of the evolution theory is based.
nanobe a microbe that is smaller than the smallest known bacterium.
paramaecium a microscopic unicellular ciliate protozoa.
paramecium a genus of tiny animals including the slipper animalcule.
paramoecium any freshwater protozoan of the genus Paramecium, having an oval body covered with cilia.
pneumocystis any protozoan of the genus Pneumocystis, esp P. carinii, which is a cause of pneumonia.
protist one of the Protista, protozoans, algae, bacteria, and other forms not readily classified as plant or animal.
protistan one of the Protista, protozoans, algae, bacteria, and other forms not readily classified as plant or animal.
protistic of or like a protist.
protozoal of or pertaining to the Protozoa.
protozoan any member of the Protozoa.
protozoic of or pertaining to the protozoa.
protozoon any member of the Protozoa.
psammon (Greek) a group of microorganisms living in waterlogged sand.
radiolarian any member of an order of marine Protozoa, or unicellular animals, with fine radial tentacles for feeding and movement.
rhizopod one of the Rhizopoda, amoebae and rotarians moving and taking in food with pseudopods.
rhizopodan one of the Rhizopoda, amoebae and rotarians moving and taking in food with pseudopods.
rhizopodous relating to a rhizopod.
rotifer (Lat.) a microscopic, multicellular, fresh-water creature with rotating cilia at one end.
rotiferal relating to a rotifer, a microscopic, multicellular, freshwater creature with rotating cilia at one end.
rotiferan a rotifer.
rotiferous relating to a rotifer, a microscopic, multicellular, freshwater creature with rotating cilia at one end.
sarcocystis a sporozoan of the genus Sarcocystis, parasitic in muscles of mammals.
schizomycete any microscopic organism of the class Schizomycetes.
schizomycetic of or like a schizomycete, any microscopic organism of the class Schizomycetes.
schizomycetous of or like a schizomycete, any microscopic organism of the class Schizomycetes.
schizont in protozoans, a mature trophozoite about to reproduce by schizogony.
scyphistoma the fixed polypoid stage in the life cycle of a scyphozoan, which reproduces asexually by budding or strobilation.
serotype a group of related microorganisms related by their antigens; (verb) to assign to a particular serotype.
spirochaete a slender, twisted, non-flagellated microorganism causing malaria, relapsing fever, yaws, and other maladies.
spirochete a spirally coiled bacterium lacking a rigid cell wall, the cause of syphilis and other diseases.
sporozoal related to sporozoa.
sporozoan any parasitic protozoan of the class Sporozoa, including the causal organisms of malaria and pebrine.
sporozoic related to sporozoa.
sporozoon any parasitic protozoan of the class Sporozoa, including the causal organisms of malaria and pebrine.
streptomyces any of a genus of mostly soil streptomycetes, including some that form antibiotics.
testacean a microscopic animal with a hard shell.
tetrahymena any of a genus of ciliate protozoans.
torula (Lat.) a yeastlike microorganism.
trichomonad any of various flagellate protozoans occurring in the digestive and urogenital tracts of vertebrates.
trichomonadal of or like a trichomonad, a kind of flagellate protozoans.
trichomonal of or like a trichomonad, a kind of flagellate protozoans.
vibracular of or like a vibraculum, one of the movable, slender, spinelike organs or parts with which certain bryozoans are furnished.
vibraculoid of or like a vibraculum, one of the movable, slender, spinelike organs or parts with which certain bryozoans are furnished.
vibraculum (Lat.) one of the movable, slender, spinelike organs or parts with which certain bryozoans are furnished.
volvox (Lat.) a genus of minute, pale-green, globular, organisms found rolling through water, the motion being produced by minute colorless cilia.
vorticella a sessile protozoan of the genus Vorticella, which has a long contractile stalk and a ciliated body shaped like an inverted bell.