cocci- Also cocco-.
A small spherical body.
[Greek kokkos, grain or berry.]
Most words in cocci- derive from one or other of the systematic names for roughly spherical microscopic living things. One is coccidia, a broad term for several types of parasitic protozoa. Coccidioides is a genus of fungus, which has given its name to coccidioidomycosis, a serious infection of the lungs and other tissues, also known as San Joaquin Valley fever. A coccolithophore is a single-celled marine organism with a calcareous shell, whose tiny platelets are called coccoliths.