Merism in the context of King of the Four Corners

Pars pro toto (Latin for 'a part (taken) for the whole'; /ˌpɑːrz proʊ ˈtoʊtoʊ/; Latin: [ˈpars proː ˈtoːtoː]), is a figure of speech where the name of a portion of an object, place, or concept is used or taken to represent its entirety. It is distinct from a merism, which is a reference to a whole by an enumeration of parts; and metonymy, where an object, place, or concept is called by something or some place associated with it. It is a form of synecdoche, which can refer both to pars pro toto and its inverse, totum pro parte (Latin for 'the whole for a part').

In the context of language, pars pro toto means that something is named after a part or subset of it or after a limited characteristic, which in itself is not necessarily representative of the whole. For example, "glasses" is a pars pro toto name for something that consists of more than just two pieces of glass (the frame, nose bridge, temples, etc. as well as the lenses). Pars pro toto usage is especially common in political geography, with examples including "Russia" or "Russians", referring to the political institution (both historically and contemporary) or its people; "Holland" for the Netherlands; and, particularly in languages other than English, using the translation of "England" in that language to refer to Great Britain or the United Kingdom.

The Pama–Nyungan languages (/ˌpɑːmə ˈnjʊŋən/ PAH-mə-NYOONG-ən) are the most widespread family of Australian Aboriginal languages, comprising 306 of the 400 Aboriginal languages of Australia. The name "Pama–Nyungan" is a merism: it is derived from the two end-points of the range, the Pama languages of northeast Australia (where the word for 'man' is pama) and the Nyungan languages of southwest Australia (where the word for 'man' is nyunga).

The other language families indigenous to the continent of Australia are often referred to, by exclusion, as non-Pama–Nyungan languages, though this is not a taxonomic term. The Pama–Nyungan family accounts for most of the geographic spread, most of the Aboriginal population, and the greatest number of languages. Most of the Pama–Nyungan languages are spoken by small ethnic groups of hundreds of speakers or fewer. Many languages have become extinct, and almost all remaining ones are endangered in some way. Only in the central inland portions of the continent do Pama–Nyungan languages continue to be spoken vigorously by the entire community.

King of the Four Corners of the World (Sumerian: lugal-an-ub-da-limmu-ba, Akkadian: šarru kibrat arbaim, šar kibrāti arbaʾi, or šar kibrāt erbetti), alternatively translated as King of the Four Quarters of the World, King of the Heaven's Four Corners or King of the Four Corners of the Universe and often shortened to simply King of the Four Corners, was a title of great prestige claimed by powerful monarchs in ancient Mesopotamia. Though the term "four corners of the world" does refer to specific geographical places within and near Mesopotamia itself, these places were (at the time the title was first used) thought to represent locations near the actual edges of the world and as such, the title should be interpreted as something equivalent to "King of all the known world", a claim to universal rule over the entire world and everything within it.

The title was first used by Naram-Sin of the Akkadian Empire in the 23rd century BC and was later used by the rulers of the Neo-Sumerian Empire, after which it fell into disuse. It was revived as a title by a number of Assyrian rulers, becoming especially prominent during the Neo-Assyrian Empire. The final ruler to claim the title was the first Persian Achaemenid king, Cyrus the Great, after his conquest of Babylon in 539 BC.