vowel, with the exceptions of bi-, which is bis- before a vowel, and of the other monosyllables, du-, 
di-, dvi-, tri-, which are invariable.
Kaynak: Numeral prefixThe prefix 
di- is of Greek origin, meaning two.  Common diatomic molecules are hydrogen  (H 2), nitrogen  (N 2), oxygen  (O 2), and carbon
Kaynak: Diatomic moleculeThe Yang 
di-Pertuan Agong (Jawi : يڠ د-ڤرتوان اڬوڠ) is the head of state of Malaysia .  The office was established in 1957 when the
Kaynak: Yang di-Pertuan AgongThe Yang 
di-Pertua Negeri (literally the "head of state" in Malay ) is the official title of the ceremonial  governor s of the Malaysia n
Kaynak: Yang di-Pertua NegeriIn Malay , Yang 
di-Pertuan Besar, literally "He Who Is Made Great" or "Great Ruler", is a royal  title . In Malaysia : Also known as Yamtuan
Kaynak: Yang di-Pertuan BesarCyclic 
di-GMP (also called cyclic diguanylate and c-
di-GMP) is a second messenger  used in signal transduction in a wide variety of
Kaynak: Cyclic di-GMPYang 
di-Pertuan Negara, meaning "Head of State" in Malay , was used as an official title at various times in Sabah , Singapore  and Brunei
Kaynak: Yang di-Pertuan NegaraPietra-
di-Verde is a commune  in the Haute-Corse  department  of France  on the island of Corsica . Population: 1962 179 | 1968 196 | 1975 129
Kaynak: Pietra-di-Verde