Obsidion is a related term of obsidious.
As an adjective obsidious is
(rare) besieging; besetting, obsessional.
obsidion
Not English
Obsidion has no English definition. It may be misspelled.
English words similar to 'obsidion':
obsidian,
obstacles,
offsides,
offsets,
opposites,
oboists,
obstructs,
ovicides,
opcodes,
opacities,
obsidious,
oboeists,
obeasts,
opisthion,
opacates,
offsiders,
obestatin
obsidious
English
Adjective
(
en adjective)
(rare) besieging; besetting, obsessional
Related terms
*obsidion
References
*OED 2nd edition 1989 