Definition of reddingite in US English:

reddingite

noun

Mineralogy
  • A mineral that forms an isomorphous series with phosphoferrite and occurs as pinkish, yellowish, or colourless translucent or transparent crystals.

Origin

Late 19th century. From the name of Redding, a town in Fairfield County, Connecticut, where the mineral was first found + -ite.

Pronunciation

reddingite

/ˈrɛdɪŋʌɪt/