1.Definition: filled with vapor

"A vaporous bog"

Related Adjective(s):miasmal, miasmic, vapourous

2.Definition: resembling or characteristic of vapor

"Vaporous clouds"

Related Adjective(s):vaporific, vaporish, vapourific, vapourish, vapourous

3.Definition: so thin as to transmit light

"Vaporous silks"

Related Adjective(s):cobwebby, diaphanous, filmy, gauzy, gossamer, sheer, transparent, vapourous