CAMEL-BACKED, adjective Having a back like a camel. Cameleon mineral. [See Chameleon.] A compound of pure potash and black oxyd of manganese, fused together, whose solution in water, at first green, passes spontaneously through the whole series of colored rays to the red; and by the addition of potash, it returns to its original green.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI