measles

n. contagious virus occurring mostly in children that is characterized by red spots on the skin

n. cysticercus; singular form of measles (contagious disease); leper, one who is infected with leprosy (Archaic)

Measles, also known as rubeola, is a disease caused by a virus , specifically a paramyxovirus of the genus Morbillivirus. Measles is spread through respiration (contact with fluids from an infected person's nose and mouth, either directly or through aerosol transmission), and is highly contagious—90% of people without  immunity sharing a house with an infected person will catch it. Airborne precautions should be taken for all suspected cases of measles.
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Measles is an infection caused by a virus, which causes an illness displaying a characteristic skin rash known as an exanthem. [more]Measles - Community and Resources

Noun
1. an acute and highly contagious viral disease marked by distinct red spots followed by a rash; occurs primarily in children
(synonym) rubeola, morbilli
(hypernym) contagious disease, contagion
(hyponym) German measles, rubella, three-day measles, epidemic roseola

(n.)
The larvae of any tapeworm (Taenia) in the cysticerus stage, when contained in meat. Called also bladder worms.
  

(n.)
Leprosy; also, a leper.
  

(n.)
A disease of trees.
  

(n.)
A disease of cattle and swine in which the flesh is filled with the embryos of different varieties of the tapeworm.
  

(n.)
A contagious febrile disorder commencing with catarrhal symptoms, and marked by the appearance on the third day of an eruption of distinct red circular spots, which coalesce in a crescentic form, are slightly raised above the surface, and after the fourth day of the eruption gradually decline; rubeola.