تلفظ بین المللی : /θˈɪkskˈɪnd/ تلفظ : [T'Iksk'Ind]
English
Having a thick skin; hence, not sensitive; dull;
obtuse.
One of the classes of Protozoa, including a large number of species, all of minute size. Note: They are found in all seas, lakes, ponds, and streams, as well as in infusions of organic matter exposed to the air. They are distinguished by having vibrating lashes or cilia, with which they obtain their food and swim about.They are devi...
