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2 definitions found
From:
DICT.TW English-Chinese Dictionary 英漢字典
pi·per·o·nal
/paɪˈpɛrəˌnæl/
胡椒醛; 向日葵素
From:
Webster's Revised Unabridged Dictionary (1913)
Pip·er·o·nal
n.
Chem.
A
white
crystalline
substance
obtained
by
oxidation
of
piperic
acid
,
and
regarded
as
a
complex
aldehyde
.
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