A mineral is a naturally occurring substance, representable by a chemical formula, that is usually solid and inorganic, and has a crystal structure.It is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition.ommon distinguishing characteristics include crystal structure and habit, hardness, lustre, diaphaneity, colour, streak, tenacity, cleavage, fracture, parting, and specific gravity. More specific tests for minerals include magnetism, taste or smell, radioactivity and reaction to acid.
Define staphylo-. staphylo- synonyms, staphylo- pronunciation, staphylo- translation, English dictionary definition of staphylo-. pref. 1. Cluster; resembling a cluster: staphylococcus. 2. The uvula: staphyloplasty. combining form 1. uvula: staphyloplasty. 2. resembling a bunch of...
Staphylococci are spherical Gram-positive bacteria, which are immobile and form grape-like clusters. They form bunches because they divide in two planes as opposed to their close relatives streptococci which, although they are similarly shaped, form chains because they divide only in one plane.