ig·nim·brite 
(ĭgnĭm-brīt′)
(ĭgnĭm-brīt′)n.
A volcanic rock formed by the deposition and consolidation of ash flows and nuées ardentes.
[Latin ignis, fire + imber, imbr-, rain + -ITE1.]
- interposer
- interposition
- interpret
- interpretability
- interpretable
- interpretableness
- interpretation
- interpretational
- interpretative
- interpreted language
- interpreter
- interpretive
- interpretively
- interpupillary
- interracial
- interregional
- interregnal
- interregnum
- interrelate
- interrelatedness
- interrelationship
- interreligious
- interrobang
- interrog.
- interrogate