Definition

1. Verb (Transitive):

   • To force out or cause to escape from a proper vessel or channel: In medical contexts, this refers to the escape of a fluid, such as blood or an intravenous drug, from its contained vessel into the surrounding tissue.
   • To cause molten material, such as lava, to pour forth: In geology, this describes the action of causing volcanic material to erupt or flow out onto the surface.

2. Verb (Intransitive):

   • To become active and spew forth lava and rocks: Used in geology to describe a volcano erupting.
   • To escape from a proper vessel or channel: Used in medicine to describe the process where a fluid leaks out from its intended container.

Examples of Usage

• Verb (Transitive):

  • The nurse was careful not to extravasate the chemotherapy drug from the vein. (Medical: to cause to escape from a vessel)
  • The volcanic pressure extravasated lava across the ancient plain. (Geology: to cause molten material to pour forth)

• Verb (Intransitive):

  • The volcano began to extravasate, covering the slopes with ash. (Geology: to spew forth lava)
  • If the IV line is damaged, the solution can extravasate into the patient's arm. (Medical: to escape from a vessel)

Advanced Usage

• Technical/Medical Jargon: The term is most commonly used in clinical settings to describe a specific complication of intravenous therapy.

  • The medical team monitored the site closely for signs that the contrast dye might extravasate.

• Technical/Geological Jargon: Used in scientific descriptions of volcanic activity.

  • The fissure extravasated basaltic magma over a period of several weeks.

Variants and Related Words

• Extravasation (n): The process or result of extravasating.
  • The patient experienced pain due to the extravasation of the medication.
  • The extravasation of lava formed a new flow field.

Synonyms

• Verb (Medical context): Leak, seep, escape, exude.
• Verb (Geological context): Erupt, spew, eject, discharge.

Related Phrases

• "To extravasate from": To leak out from a specific source.
  • Blood can extravasate from a ruptured capillary.
• "Risk of extravasation": A common phrase in healthcare warning of the potential for fluid to escape.
  • This medication carries a high risk of extravasation and must be administered with care.

Notes on Meaning

• The primary and most frequent use of extravasate is in medical terminology. The geological usage is highly specialized and less common in everyday language.
• The word implies an abnormal or forced escape from a confined space, distinguishing it from a simple, controlled flow.

Verb

1. geology: cause molten material, such as lava, to pour forth
2. become active and spew forth lava and rocks
   • Vesuvius erupts once in a while
3. force out or cause to escape from a proper vessel or channel