CHLORIN, noun Chloric gas; a new name given to what has been called oxymuriatic gas. This substance has hitherto resisted all efforts to decompose it, and as it is not known to contain oxygen, and is apparently a simple substance, it has been denominated from its color, chlorine, or chloric gas.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI