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

guinea worm

noun

Definition of guinea worm

  1. :  a slender nematode worm (Dracunculus medinensis) of tropical regions that is parasitic in humans, has no known animal reservoir, and has an adult female that infests subcutaneous tissues and may attain a length of several feet



1699

First Known Use of guinea worm

1699


Medical Dictionary

Guinea worm

noun

Medical Definition of Guinea worm

  1. :  a slender, tropical, parasitic nematode worm of the genus Dracunculus (D. medinensis) that has an adult female that often attains a length of over 3 feet (91.5 centimeters) and is the causative agent of dracunculiasis The Guinea worm undergoes larval development in tiny freshwater copepod crustaceans (genus Cyclops) which are ingested by humans in contaminated drinking water. When the Guinea worm larvae are released, they pass from the stomach and intestine to the thorax and abdomen for maturation and mating. Gravid females of typically 24 to 40 inches (60 to 100 centimeters) in length migrate through subcutaneous tissues towards the skin especially of the lower legs and feet. At the skin surface, the female worms form painful blisters from which they slowly emerge approximately 10 to 14 months following initial infection. Upon immersion in water, the female expels hundreds of thousands of young larvae. —called also Medina worm



Variants of guinea worm

or

guinea worm


Learn More about guinea worm


Seen and Heard

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

WORD OF THE DAY

to lessen in amount, effect, or force

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

fox-in-summer-forest

Which of these is a synonym of inchoate?

formless massive frightening experimental
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ