| BASTNASITES | • bastnasites n. Plural of bastnasite. • bastnäsites n. Plural of bastnäsite. • BASTNASITE n. (Swedish) a reddish-brown fluorite of cerium, also BASTNAESITE. | 
| DYSCRASITES | • DYSCRASITE n. a mineral consisting of antimony and silver. | 
| ECTOPARASITES | • ectoparasites n. Plural of ectoparasite. • ECTOPARASITE n. a parasite that lives on the surface of animals. | 
| ENDOPARASITES | • endoparasites n. Plural of endoparasite. • ENDOPARASITE n. a parasite that lives inside an animal. | 
| EXOPARASITES | • exoparasites n. Plural of exoparasite. • EXOPARASITE n. a parasite, such as the flea, that lives on the outer surface of its host. | 
| HEMIPARASITES | • hemiparasites n. Plural of hemiparasite. • HEMIPARASITE n. a parasitic plant capable of limited photosynthetic production of sugars etc. | 
| HOLOPARASITES | • holoparasites n. Plural of holoparasite. | 
| HYPERPARASITES | • hyperparasites n. Plural of hyperparasite. • HYPERPARASITE n. a parasite that is parasitic upon another parasite. | 
| MARCASITES | • marcasites n. Plural of marcasite. • MARCASITE n. sulphide of iron in orthorhombic crystals. | 
| MICROPARASITES | • microparasites n. Plural of microparasite. • MICROPARASITE n. a very small parasite. | 
| PALLASITES | • pallasites n. Plural of pallasite. • PALLASITE n. any of a class of stony-iron meteorites composed largely of olivine crystals enclosed in a network of nickel-iron. | 
| PARASITES | • parasites n. Plural of parasite. • PARASITE n. an organism that lives and feeds on another. | 
| PARGASITES | • pargasites n. Plural of pargasite. • PARGASITE n. a dark green aluminous variety of amphibole, or hornblende. | 
| POLYBASITES | • polybasites n. Plural of polybasite. • POLYBASITE n. a grey to black mineral consisting of a sulphide of silver, antimony, and copper in the form of platelike monoclinic crystals. | 
| SEMIPARASITES | • semiparasites n. Plural of semiparasite. • SEMIPARASITE n. a partial parasite, feeding partly independently. | 
| THAUMASITES | • THAUMASITE n. a mineral, hydrated silicate, carbonate and sulphate of calcium. |