a square matrix A for which AA * = A * A, where A * is the Hermitian conjugate of A
Hyper vs. HypoLet’s start from the top: Hyper- is a prefix that means excess or exaggeration, while hypo- is another prefix that means under or beneath. Both hyper and hypo are usually used as prefixes, which are elements or partial words added to the beginning of a base word to modify its meaning. Hyper is derived from the Greek word for over, and hypo is a Greek …
Made-Up Words: Twitter’s Favorite Family MalapropismsJust about every family has a word that makes sense only to them. There's even an official term for this phenomenon: malapropism, a noun that means "an act or habit of misusing words ridiculously, especially by the confusion of words that are similar in sound." So, we asked Dictionary.com fans to share some of their favorite family malapropisms and explain their backstories.
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