Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

1

open

play
adjective \ˈō-pən\

Medical Definition of open

  1. 1a:  not covered, enclosed, or scabbed over <an open lesion> <an open running ulcer>b:  not involving or encouraging a covering (as by bandages or overgrowth of tissue) or enclosure <open treatment of burns>c:  relating to or being a compound fractured:  being an operation or surgical procedure in which an incision is made such that the tissues and organs are fully exposed—compare open-heart

  2. 2:  shedding the infective agent to the exterior <open tuberculosis>—compare closed 3

  3. 3a:  unobstructed by congestion or occlusion <open sinuses>b:  not constipated <open bowels>

  4. 4:  using a minimum of physical restrictions and custodial restraints on the freedom of movement of the patients or inmates <an open psychiatric ward>




2

open

verb

Medical Definition of open

openedopen·ing

  1. transitive verb

  2. 1a:  to make available for entry or passage by removing (as a cover) or clearing away (as an obstruction)b:  to free (a body passage) of congestion or occlusion <an inhalator for opening congested nasal passages> <open clogged arteries>

  3. 2:  to make one or more openings in <opened the boil>

  4. intransitive verb

  5. :  to spread out <the wound opened>





Seen and Heard

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

WORD OF THE DAY

February 9, 2016

marked by high spirits and laughter

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

pince-nez duvet spindrift kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ