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 members of the family Micrococcaceae. They are Gram-positive, catalase-positive and occur singly and in irregular grapelike clusters, a description from which is the origin of their name. Staphylococci are broadly divided into a group that produce coagulase (S. aureus) and those that do not (96).