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Meaning of extrusive
The primary meaning of the word "extrusive" refers to rocks or rock formations that have been ejected or thrown out, especially from a volcano.
Etymology of extrusive
The word "extrusive" comes from the Latin words "extrudere", meaning "to thrust out", and the suffix "-ive", which forms an adjective indicating a relation or tendency
Historically, the term has been used in geology since the 19th century to describe rocks that have been formed from the ejection of molten material from a volcano
Synonyms
eruptive
effusive
explosive
volcanic
outward
external
exterior
extramural
extraneous
outgoing
effluent
fluent
gushing
profuse
prolific
outward-going
exteriorized
externalized
externalised
extrinsically
outwardly
externally
extracorporeal
extraterritorial
extracranial
extramuscular
extravasated
extraverted
extroverted
Definitions
- Relating to or denoting rocks or rock formations that have been ejected or thrown out, especially from a volcano
- * Relating to or denoting a type of rock that has been formed from the cooling and solidification of lava or other molten material that has been ejected from a volcano
- * Relating to or denoting a type of igneous rock that is formed from the rapid cooling of lava flows
Usage Examples
- The extrusive rocks found in the region are a result of ancient volcanic activity
- * The extrusive nature of the lava flows made it difficult for the researchers to collect samples
- * The geologist studied the extrusive rocks to determine the history of the volcano
Antonyms
intrusive
inward
internal
interior
inward-going
introverted
introversive
ingrown
inwardly
internally
intramurally
intrinsically
introvertly
reclusive
secluded
isolated
confined
enclosed
inward-looking