intrathecal

adjective in·tra·the·cal \ ˌin-trə-ˈthē-kəl , -(ˌ)trä- \

Definition of intrathecal

: introduced into or occurring in the space under the arachnoid membrane of the brain or spinal cord
  • intrathecal drugs

intrathecally

play \ˌin-trə-ˈthē-k(ə-)lē, -(ˌ)trä-\ adverb

First Known Use of intrathecal

1887

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Medical Dictionary

intrathecal

adjective in·tra·the·cal \ -ˈthē-kəl \

medical Definition of intrathecal

: introduced into or occurring in the space under the arachnoid membrane of the brain or spinal cord
  • intrathecal chemotherapy and cranial irradiation
  • Journal of the American Medical Association

intrathecally

play \-kə-lē\ adverb

Learn More about intrathecal


Seen and Heard

What made you want to look up intrathecal? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a large number

Get Word of the Day daily email!

Test Your Vocabulary

Odd Habits and Quirks Quiz

  • image1926873504
  • Which of the following best describes an easily irritated person?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!