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Webster 1913 Edition
Pyroarsenic
Pyrˊo-ar-sen′ic
,Adj.
 [
Pyro- 
+ arsenic
.] (Chem.) 
Pertaining to or designating, an acid of arsenic analogous to pyrophosphoric acid. 
Definition 2025
pyroarsenic
pyroarsenic
English
Adjective
pyroarsenic (not comparable)
- of, or relating to pyroarsenic acid or its derivatives