A magic herb or plant used by Odysseus to overcome Circe. / Any plant associated with the mythological moly, especially the European allium, Allium moly.

(informal) molybdenum / (slang) molybdenum grease

plural of moly

Alternative spelling of holy moley.

plural of moly cow

(chemistry, medicine, informal) A device used to extract from a source of decaying molybdenum-99 the metastable isotope ⁹⁹ᵐTc of technetium, which is the most commonly used medical radioisotope.

A chemical element (symbol Mo) with an atomic number of 42: a silvery metal, not found as a free element, used in steel alloys. / A single atom of this element.

(chiefly Britain) Alternative spelling of molybdenum disulfide

(chemistry) a black, crystalline inorganic polymer of empirical formula MoS₂ that occurs as the mineral molybdenite and is used as a lubricant having a structure analogous to graphite

(mineralogy) A mineral, molybdenum disulfide MoS₂, that is the principal ore of molybdenum; it is structurally similar to graphite and has a similar look and feel.