Hyponitrous-acid
noun
1.
an unstable, crystalline acid, H 2 N 2 O 2 .
/ˌhaɪpəˈnaɪtrəs/
noun
1.
a white soluble unstable crystalline acid: an oxidizing and reducing agent. Formula: H2N2O2
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[hahy-pon-uh-mee] /haɪˈpɒn ə mi/ noun, Linguistics. 1. the state or quality of being a , a term that denotes a subcategory of a more general class: A relationship of hyponymy exists between “dog” and “animal.”.