Ischemia
The word "ischemia" () is from Greek ἴσχαιμος "iskhaimos", "staunching blood" from ἴσχω "iskhο", "keep back, restrain" and αἷμα "haima", "blood".
Shyster
The etymology of the word is not generally agreed upon. The "Oxford English Dictionary" describes it as "of obscure origin", possibly deriving from a historical sense of "shy" meaning disreputable, whereas the "Merriam-Webster Dictionary" deemed it probably based on the German "Scheisser" [Scheißer] (literally "defecator"). Various false etymologies have suggested an anti-Semitic origin, possibly associated with the character of Shylock from Shakespeare's "The Merchant of Venice", but there is no clear evidence for this. One source asserts that the term originated in Philadelphia in 1843 from a disreputable attorney named "Schuster." A book published in 2013 traces the first use back to 1843, when scammers in New York City would exploit prisoners by pretending to be lawyers. These scammers were disparagingly referred to as "shisers", meaning "worthless people" in British slang, which in turn was originally derived from the German "Scheißer" (literally: shitter).