lavatic

From lava +‎ -tic.

lavatic (comparative more lavatic, superlative most lavatic)

1. Like lava, or composed of lava

   Synonym: lavic

   lavatic rock

   lavatic fluid

   lavatic stone

• “lavatic”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• "lavatic, adj.", in the Oxford English Dictionary, Oxford: Oxford University Press.

• vatical