Definition of radical sign in English:

radical sign

Syllabification: rad·i·cal sign

noun

Mathematics
The sign √, which indicates the square root of the number following (or a higher root indicated by a preceding superscript numeral).

Definition of radical sign in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day deictic
Pronunciation: ˈdeɪktɪk
adjective
denoting a word whose meaning depends on context...