zoo-, zoa-, zo-, -zoic, -zoid, -zoite, -zoal, -zonal, -zooid, -zoon, -zoa, -zoan +

1. Living in fecal material.
2. Found in fecal material.
3. A reference to organisms living on the excreta of other animal forms.

An animal living on or in dung or fecal material

1. The theory that earthly life was seeded by microbe-bearing comets or meteoroids from other star systems (known as panspermia).
2. Hypothesis that life came from somewhere in the universe and seeded the earth.
3. A theory that states life arose elsewhere in the universe and arrived on earth by some means, for example: UFOs, meteors, etc.

A theory, or hypothesis, that life creatures, in the form of cosmic germs, came to the earth from some outer-space sources.

Designating a theory or hypothesis that life, in the form of cosmic germs sometimes called cosmozoans, came to the earth from some outer-space source.

A theory or conception that the cosmos consists of microscopic life in the form of "germs" and that some of those elements of animal life were transported to the Earth.

1. A reference to small terrestrial animals (cryptozoa) inhabiting crevices, living under stones, in soil, or in litter.
2. Used to describe invertebrates that live in dark or concealed places such as under stones or in caves or holes.
3. In geology, the geologic time interval for which the corresponding rocks show limited evidence of primitive life forms [see the excerpts that follow].

The earliest rocks on earth with elaborate fossils are said to belong to the Cambrian age; and the entire four-billion-year history of our planet that preceded it has been, until recently, dismissed as the pre-Cambrian age. Now that the traces of life have unmistakably been found in it, the more appropriate name Cryptozoic eon (hidden life) is used, while the last 600 million years make up the Phanerozoic eon (visible life).

The Cryptozoic eon is even divided into two sections:
The earlier Archeozoic era (ancient life), to which the first traces of unicellular life belong; and the later Proterozoic era (early life).

A malarial parasite at the state in its life cycle when it is present in the host’s body tissue but before it invades the red blood cells.

1. The study of animals whose existence has yet to be proven.
2. The study of legendary creatures like the Loch Ness (Nessie), the Yeti, jackalope (half jackrabbit, half antelope), Bigfoot, Sasquatch, Ogopogo, etc.
3. The study of cryptozoic organisms.

Living within a cell.

1. Tentacles; such as, those on a Physalia physalis or "Portuguese Man-of-War" which is a large siphonophore having a bladderlike float which resembles a jellyfish and lives in warm waters. It has a transparent gas-filled float and long stinging, often poisonous tentacles that sting with a neurotoxin.
2. A hydroid modified for catching prey, long, with tentacles or short knobs, with or without a mouth.

A reference to animal skin.

Skin disease caused by animal parasites.

1. Imperfect formation of spermatozoa.
2. A disorder of spermatozoon formation.

1. An animal organism living externally on another animal.
2. Ectozoon parasiticum (plural, ectozoa parasitica), a parasitic ectozoon; an ectozoic parasite.