titanium

noun

1. (countable, uncountable)A chemical element, atomic number 22; it is a strong, corrosion-resistant transition metal, used to make light alloys for aircraft etc.

   “This airframe uses titanium alloys extensively.”

   “Even as FDA works to develop that plan, consumers continue to be exposed to unsafe food chemicals including not just dyes but also the artificial sweetener aspartame, the white pigment titanium dioxide, the preservative propylparaben, and the phthalate food packaging chemicals, according to CSPI.”

2. (countable)A single atom of this element.

   “This coordination complex contains a titanium.”