(geology) The Permian period.

(inorganic chemistry) The zinc salt of hydrochloric acid, ZnCl₂, a white crystalline solid with a number of industrial applications.

An emphatic rejection of something one has just heard and does not believe or agree with.

(mineralogy) A rare pegmatitic phosphate mineral with the formula Ca₂MgMn²⁺₂(Fe²⁺(0.5)Fe³⁺(0.5))₄Zn₄(PO₄)₈(OH)₄(H₂O)₁₄.