ἰοειδής
From LSJ
ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
[ῐ], ές, (ἴον)
A like the flower ἴον 1, purple, in Hom. always of the sea, ἰοειδέα πόντον, whether calm or stormy, Il.11.298, Od.5.56, 11.107, Hes.Th.844; κρήνη ib.3. II (ἰός B) poisonous, κέντρον Nic.Th.886; λοιγός ib.243. [Nic. makes ῐ short, as conversely he has ῑάσι from ἴον (q.v.).]