Meaning : So thin as to transmit light.
Example :
A hat with a diaphanous veil.
Filmy wings of a moth.
Gauzy clouds of dandelion down.
Gossamer cobwebs.
Sheer silk stockings.
Transparent chiffon.
Vaporous silks.
Synonyms : cobwebby, diaphanous, filmy, gauze-like, gauzy, gossamer, see-through, sheer, transparent, vaporous
Meaning : Resembling or characteristic of vapor.
Example :
Vaporous clouds.
Synonyms : vaporific, vaporish, vaporous, vapourific, vapourish