It is the product of an insect called coccus cacti, which lives on a species of cactus.
In the males of the species of coccus there is no mouth at all.
In shape bacteria show three different types; the rod-shaped (bacillus), the spherical (coccus), and the spiral (spirillum).
They are often distinguished also by the name of coccus radicum.
The coccus, too, which has caused so much destruction among our orchards at home, is fortunately still unknown here.
A coccus forming such a chain of cells is called strepto-coccus (chain-coccus).
Substances dyed with “the roots,”1557 rival in colour those dyed with the coccus, or the marine purple.
Conn observed a coccus form in bitter cream that was able to impart a bitter flavor to milk.
A bacillus, however short, can usually be distinguished from a coccus in that two sides are parallel.
The genus brachytarsus is parasitic on coccus, and the grub, not the imago, is the enemy of the white wax insect.
coccus coc·cus (kŏk'əs)
n. pl. coc·ci (kŏk'sī, kŏk'ī)
A bacterium of round, spheroidal, or ovoid form.
A microorganism of spherical or spheroidal shape: streptococcus.