[ ek-struh-kroh-muh-soh-muhl ]
/ ˌɛk strəˌkroʊ məˈsoʊ məl /
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of or relating to DNA that exists outside the main chromosome and acts independently.
QUIZ YOURSELF ON PARENTHESES AND BRACKETS APLENTY!
Set some time apart to test your bracket symbol knowledge, and see if you can keep your parentheses, squares, curlies, and angles all straight!
Question 1 of 7
Let’s start with some etymology: What are the origins of the typographical word “bracket”?
First appeared around 1750, and is related to the French word “braguette” for the name of codpiece armor.
First appeared in 1610, based on the French word “baguette” for the long loaf of bread.
First appeared in 1555, and is related to the French word “raquette” for a netted bat.TAKE THE QUIZ TO FIND OUT
Words nearby extrachromosomal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021