ech (06/25/82)
No, water-writing isn't aqueography, laser-writing isn't luminography: you're mixing your Greek (graphos) and Latin (aqua, lux) roots: writing with water would be hydrography, with light, (surprise!) photography. The latin "to write" is \scribere/, from which you might try aquascription and luminascription -- not nearly as satisfying as the (already allocated!) greek derivations, I'm afraid. Oh, yes: xeros DOES predate "xerox"...by a couple of millenia. If anybody still gives a rap after this little lecture, the Oxford English Dictionary contains reasonable etymologies for most words. If you must invent words (and why not!), you might as well do a good job of it. =Ned Horvath=