ˌself-certifiˈcation BrE AmE noun [uncountable] British English
when you sign a form or note to say that you have been ill, to explain why you have not been at work or school for a short time
ˌself-certifiˈcation BrE AmE noun [uncountable] British English
when you sign a form or note to say that you have been ill, to explain why you have not been at work or school for a short time
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012