(February 2014) Allusion is a figure of speech, in which one refers covertly or indirectly to an object or circumstance from an external context. It is left to the audience to make the connection; where the connection is directly and explicitly stated (as opposed to indirectly implied) by the author, it is instead usually termed a reference.
Titanium metal connects well with bone, so it has found surgical applications such as in joint replacements (especially hip joints) and tooth implants. The largest use of titanium is in the form of titanium(IV) oxide. It is extensively used as a pigment in house paint, artistsâ paint, plastics, enamels and paper.
Titanium is not found as a pure element in nature, but is found in compounds as part of minerals in the Earth's crust. It is the ninth most abundant element in the Earth's crust.The most important minerals for mining titanium are rutile and ilmenite.itanium is not found as a pure element in nature, but is found in compounds as part of minerals in the Earth's crust. It is the ninth most abundant element in the Earth's crust.