fumaroidadj.
/ˈfjuːmərɔɪd/ Chemistry.
Resembling fumaric acid in having a trans configuration in geometrical isomerism.
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uramilic acid1839
thioformic1857
phthalic1869
hexonic1894
fumaroid1895
malenoid1895
trigenic1941
1895 J. M. Thomson & A. G. Bloxam Bloxam's Chem. (ed. 8) 595 Many cases of stereoisomerism are believed to be explicable by formulæ resembling those given above, so that the expressions maleinoid and fumaroid structure are used.
1938 A. J. Mee tr. P. Karrer Org. Chem. xvii. 256 It thus became common to call cis-ethylenic compounds, malenoid, and trans-ethylenic derivatives, fumaroid forms.
1964 Internat. Encycl. Chem. Sci. 480/1 Fumaroid form, the axial symmetric or trans-form of ethylene geometrical isomers, named from fumaric acid.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).
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adj.1895