Lexical Definition

‎θειώδης‎ theiṓdēs (thi-o'-dace) sulphurous ^G:A
from ‎θεῖον‎ and 1491

brimstone.

• sulphur-like, i.e. sulphurous

Abbott-Smith

*† θειώδης, -ες (< θεῖον),
of brimstone, sulphureous: Re 9:17.†

Abbott-Smith References

Liddell-Scott-Jones

θειώδης, ες,

(θεῖον A)

__A sulphureous, of waters, etc., [Refs 1st c.BC+]
__A.2 of colour, yellow, θώρακες [NT]

_{LSJ Scripture Refs: Rev.9.17}