titanium dioxide
1
4.6
- noun
- /taɪˈteɪniəm daɪˈɒksaɪd/
- Specialized
:
dióxido de titanio
- Many sunscreens contain titanium dioxide because it effectively blocks harmful UV rays.
- titanium dioxide sunscreen
- titanium dioxide, a white pigment
- sunblocks containing titanium dioxide
Examples
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Next time you are shopping, Dior's Snow line makes a wonderful sunscreen (50 and titanium dioxide) which I have used for years.
Blog text (4) -
The strength of the chemical bonds with hydrogen can be weakened with additives (n7) such as titanium dioxide in sodium aluminum hydride (NaAlH4).
Academic text (2004) -
The titanium dioxide in this paint gives it excellent coverage and durability.
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Cosmetics often use titanium dioxide as a white pigment for its opacity and skin protection.
Synonyms
A white powder used to make things like paint or cream look white and stay bright
A white powder used to make paint and block harmful sun rays in sunscreen
A white powder that makes paint and sunscreen whiter and last longer
Surface Forms
Morphology
The compound is directly compositional: a B1 learner who knows 'titanium' and 'dioxide' can infer it is an oxide of titanium containing two oxygen atoms, i.e. a chemical compound. Specialized properties such as photocatalytic behaviour are technical and not predictable from the parts, but the basic referent (the titanium oxide) is transparent and cross-linguistically recognizable.
Etymology
Titanium dioxide gets its name from the metal titanium (named after the strong Titans of Greek myth) and dioxide, which shows it is combined with oxygen. The image of a strong metal plus oxygen makes a very white, stable powder, which is why it is used as a 'white pigment' in paints, toothpaste, and sunscreens.