Correct spelling for the English word "ras" is [ɹˈɑːz], [ɹˈɑːz], [ɹ_ˈɑː_z]] (IPA phonetic alphabet).
The name and genetic symbol for a mutant gene that has been identified as one of those associated with certains types of cancer; it is a form of oncogene. It was first observed in rats, but analogues have been found in humans and other animals.
- "A Narrative of Captivity in Abyssinia With Some Account of the Late Emperor Theodore, His Country and People" by Henry Blanc
- "Personal Narrative of a Pilgrimage to Al-Madinah and Meccah" by Sir Richard Francis Burton