oxygen saturation curve. graphical representation describing the relationship (usually curvilinear) between fraction of oxygen-binding sites (of a protein) that have oxygen bound to them and the partial pressure (concentration) of free oxygen.
Other dialects spoken in the Philippines include Cebuano, Ilokano, Waray-Waray, Hiligaynon, Pangasinan, Bikol, Maranao, Maguindanao, Tausug, and Kapampangan, but the official language, Filipino, is based on Tagalog.
It is also more politically correct to refer to Filipino, not Tagalog, as the Philippine national language. For Filipinos from other parts of the country, Tagalog is not their first language; they learn to speak Filipino because it is constitutionally the national language and taught in schools.