[ soo-per-gran-yuh-ley-shuh n ]
/ ˌsu pərˌgræn yəˈleɪ ʃən /
one of a number of large convection cells in the photosphere and chromosphere of the sun, each having a diameter of 10,000–20,000 miles (16,000–32,000 km) and lasting longer than a day.
sleeper cellRead more in this article about some frequently asked questions and fun facts related to our definitions.
Who Invented The Crossword?Arthur Wynne is usually credited with inventing the crossword. His first puzzle, called a word-cross, was published in December 1913 in the New York World. But there may have been other predecessors to the crossword: in England in the 19th century and an Italian version called per passare il tempo, which means “to pass the time.” Word crosses eventually became known as crosswords, and their creators …
- supergiant star,
Origin of supergranulation cell
Also called su·per·gran·u·la·tion.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019