What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
Definition of melainotype in US English:
melainotype
noun
PhotographyA collodion photograph on either glass or metal, especially one on glass that has to be viewed against a dark background.
Origin
Mid 19th century; earliest use found in Porter's Spirit of Times. From ancient Greek μελαίνειν to turn black + -o- + -type.
