a. 火山的, (喻)突然爆发的

[ noun ]
a green or yellow or brown mineral consisting of a hydrated silicate; it occurs as crystals in limestone and is used a gemstone
<noun.substance>

Vesuvian \Ve*su"vi*an\, a. [Cf. F. V['e]suvien, It. Vesuviano.]
Of or pertaining to Vesuvius, a volcano near Naples.


Vesuvian \Ve*su"vi*an\, n. [G. vesuvian. See {Vesuvian}, a.]
1. (Min.) Vesuvianite.

2. A kind of match or fusee for lighting cigars, etc.
[Webster 1913 Suppl.]