Strong's G2306 — θειώδης (adjective)
theiodes (thei-o'-dace) adj.
1. sulphur-like, i.e. sulphurous
[from G2303 and G1491]
KJV: brimstone 
Root(s): G2303, G1491 
Hebrew root: εἶδος
Occurrences: 1