Ischemia
The word "ischemia" () is from Greek ἴσχαιμος "iskhaimos", "staunching blood" from ἴσχω "iskhο", "keep back, restrain" and αἷμα "haima", "blood".
Iridescence
The word "iridescence" is derived in part from the Greek word ἶρις "îris" (gen. ἴριδος "íridos"), meaning "rainbow", and is combined with the Latin suffix "-escent", meaning "having a tendency toward". Iris in turn derives from the goddess Iris of Greek mythology, who is the personification of the rainbow and acted as a messenger of the gods. "Goniochromism" is derived from the Greek words "gonia", meaning "angle", and "chroma", meaning "colour".