What is meaning of fossilisation in linguistic ?

The Four Pillars of Sukavichinomics Keynote Address by His Excellency Mr. Sukavich Rangsitpol at the SEAMEO Council Conference The stability of the country is based on four principles. first is

Responding to your question, Dr. Wael Shihab, PhD in Islamic Studies, Al-Azhar University, Ex-Head of the Fatwa Unit of IslamOnline.net (English website), and the Shari`ah Consultant of the (English)