iridolinen.

/ʌɪˈrɪdəʊlʌɪn/Etymology: < Latin īrid- iris n. + ol-eum oil + -ine suffix1.
Chemistry.
1892 H. F. Morley & M. M. P. Muir (rev. ed.) III. 50.
This entry has not yet been fully updated (first published 1900; most recently modified version published online June 2018).