beriberi
UK[ˌberiˈberi]US[ˌberiˈberi]
n
A disease, mainly occurring in Asia, caused by a lack of vitamin B1 (thiamine) and affecting the nerves and heart.
Etymology
The term 'beriberi' entered the English language in the early 18th century via Portuguese explorers and colonists from its source in Sinhalese. Its formation is a classic example of lexical reduplication, where the base word 'beri' (meaning weakness) is repeated to convey a severe or extreme state of that condition. This naming directly reflects the most prominent symptom of the disease—profound physical debilitation and paralysis. The word's journey from a descriptive Sinhalese phrase to a specific medical term in international medicine illustrates how local observations become codified in scientific vocabulary.
Analysis
This word is a loanword from Sinhalese (an Indo-Aryan language of Sri Lanka). It is a reduplication of the word "beri," meaning "weakness." The repetition is used for emphasis, intensifying the meaning to "extreme weakness."
Examples
The outbreak of beriberi in the region was linked to a diet consisting almost exclusively of polished white rice.
Symptoms of beriberi include weight loss, emotional disturbances, and impaired sensory perception.
The discovery that beriberi was a nutritional deficiency revolutionized the field of public health.