The story
From iso- + mangiferin.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: The xanthone glycoside 1,3,6,7-tetrahydroxy-4-[(2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]xanthen-9-one Full definition →
From iso- + mangiferin.
Etymology from Wiktionary, CC BY-SA 4.0.