Fulgurite definition
A slender, usually tubular body of glassy rock produced by lightning striking and then fusing dry sandy soil.
noun
A glassy substance, usually tube-shaped, formed by fusion when sand, rock, etc. are struck by lightning.
noun
A slender, usually tubular body of glassy rock produced by lightning striking and then fusing dry sandy soil.
Other Word Forms
Noun
Singular:
fulgurite
Plural:
fulgurites