Dust
Dust was a fine particle of matter from various origins. When found in outer space, it was called interstellar dust. Particulate dust was minute dust. Dust could form into dust clouds.

By April 2151, the only other inhabited planet besides Earth that  visited had featured only dust-dwelling ticks. ()

The Andorian Tholos told T'Pol in June of 2151 that most Vulcans smell of dust but she was different. ()

A dust mite was a type of tiny arachnid that was common on Earth. ()

In 2266, Eve McHuron apologized for coughing, saying it must be the dust in the air that caused it. Ben Childress told her Rigel XII was always like that. ()

In 2267, Montgomery Scott attributed the shorting of a circuit on the  to dust. ()

In 2268, Spock noted the presence of dust on various instruments in the Vians' laboratory, suggesting they had not been used for some time. ()

Dust was also used as a figure of speech to refer to a planet. The Klingon Commander Kang refered to Beta XII-A as a "ball of dust." ()

A dust jacket was a removable piece of paper used to protect a book's cover. ()

The nebula encountered by  in 2371 consisted of hydrogen, helium, hydroxyl radicals, and some local dust nodules. That was no problem for Voyager to navigate. ()

When the Caretaker's array was destroyed in 2371, the debris was scanned and found to be particulate dust and metallic fragments composed of an unknown alloy, as well as vapor composed of hydrogen, helium,  and argon. It was more briefly described as there being nothing left but some fused pieces of metal alloy. ()

See also 
 Dust demon
 Dust storm

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Materials
Particles