particulate Meaning in the Cambridge English Dictionary
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Meaning of “particulate” in the English Dictionary

"particulate" in British English

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particulatenoun [C usually plural]

uk   us   /pəˈtɪ.kjuː.lət/ specialized
an ​extremelysmallpiece of ​dirt, ​especially one ​produced by ​roadvehicles, that ​causes pollution
adjective /pəˈtɪ.kjuː.lət/
healthrisksposed by particulate ​matter
(Definition of particulate from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"particulate" in American English

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particulateadjective [not gradable]

 us   /pərˈtɪk·jə·lɪt, pɑr-/
science relating to or consisting of very ​smallpieces of a ​substance
(Definition of particulate from the Cambridge Academic Content Dictionary © Cambridge University Press)
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