Mendelevium was discovered by Albert Ghiorso, Bernard G. Harvey, Gregory R. Choppin, Stanley G. Thompson and Glenn T. Seaborg (USA) in 1955. Named in honour of Dimitri Mendeljejev, the Russian chemist who devised the periodic table. It is synthetic radioactive metal. Mendelevium was made by bombarding einsteinium with helium ions.
Mercaptans are a traditional term abandoned by IUPAC, synonymous with thiols, a sulfur-containing organic compound with the general formula R-SH where R is any radical. This term is still widely used.
Mercaptides are derivatives of mercaptanes in which hydrogen from the SH-group is replaced with a metal atom.
Metabolism is a sum of all chemical and physiological processes by which the body builds and maintains itself. It is a process of building the body’s molecular structures from nutrients (anabolism) and breaking them down for energy (catabolism).
Metal hydrides are compounds formed of atoms of a metal combined with atoms of hydrogen in which hydrogen has an oxidation number -1.
Metallic bond is a electrostatic attraction binding the positive ions of a solid metal together by means of a "sea" of delocalised valence electrons
Metalloid (semimetal) is any of a class of chemical elements intermediate in properties between metals and nonmetals. The classification is not clear cut, but typical metalloids are boron (B), silicon (Si), germanium (Ge), arsenic (As), and tellurium (Te). They are electrical semiconductors and their oxides are amphoteric.
Metallurgy is a science which studies metals and their extraction from ore.
Generalic, Eni. "OFICINAVIRTUAL.ISSSTE.GOB.MX." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
Glossary
Periodic Table