Definition of microRNA in English:

microRNA

Syllabification: mi·cro·RNA
Pronunciation: /ˌmīkrōˌärenˈā/

Entry from US English dictionary

noun

Genetics
A cellular RNA fragment that prevents the production of a particular protein by binding to and destroying the messenger RNA that would have produced the protein.

Definition of microRNA in:

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Word of the day bogle
Pronunciation: ˈbōɡəl
noun
a phantom or goblin