halide
halogen compound
[C] Countable
pl: halides
This term is strictly technical and belongs to the domain of inorganic chemistry. It describes a specific class of salts where a halogen atom is the anion, creating a strong ionic or covalent bond that often results in high stability or specific optical properties.
In practical application, the term is most frequently encountered in the context of photography and optics. Silver halides, for instance, are the light-sensitive crystals that allowed traditional film photography to function by reacting to photons of light.
Used to refer to specific chemical compounds, such as a silver halide or a metal halide.