Definition of smart dust in English:

smart dust

Syllabification: smart dust

Entry from US English dictionary

noun

A collection of microelectromechanical systems forming a simple computer in a container light enough to remain suspended in air, used mainly for information gathering in environments that are hostile to life.

Definition of smart dust in:

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Word of the day deictic
Pronunciation: ˈdeɪktɪk
adjective
denoting a word whose meaning depends on context...