Perfective aspectThe perfective aspect (abbreviated ), sometimes called the aoristic aspect, is a grammatical aspect that describes an action viewed as a simple whole; i.e., a unit without interior composition. The perfective aspect is distinguished from the imperfective aspect, which presents an event as having internal structure (such as ongoing, continuous, or habitual actions). The term perfective should be distinguished from perfect (see below). The distinction between perfective and imperfective is more important in some languages than others.
Laryngeal theoryThe laryngeal theory is a theory in the historical linguistics of the Indo-European languages positing that: The Proto-Indo-European language (PIE) had a series of phonemes beyond those reconstructable by the comparative method. That is, the theory maintains that there were sounds in Proto-Indo-European that no longer exist in any of the daughter languages, and thus, cannot be reconstructed merely by comparing sounds among those daughter languages.
Vocative caseIn grammar, the vocative case (abbreviated ) is a grammatical case which is used for a noun that identifies a person (animal, object, etc.) being addressed, or occasionally for the noun modifiers (determiners, adjectives, participles, and numerals) of that noun. A vocative expression is an expression of direct address by which the identity of the party spoken to is set forth expressly within a sentence.
Frankish languageFrankish (reconstructed endonym: *Frenkisk), also known as Old Franconian or Old Frankish, was the West Germanic language spoken by the Franks from the 5th to 9th century. After the Salian Franks settled in Roman Gaul, its speakers in Picardy and Île-de-France were outnumbered by the local populace who spoke Proto-Romance dialects. However, many modern French words and place names, including the eventual country's name of "France", have a Frankish (i.e. Germanic) origin.
Russian grammarRussian grammar employs an Indo-European inflexional structure, with considerable adaptation. Russian has a highly inflectional morphology, particularly in nominals (nouns, pronouns, adjectives and numerals). Russian literary syntax is a combination of a Church Slavonic heritage, a variety of loaned and adopted constructs, and a standardized vernacular foundation. The spoken language has been influenced by the literary one, with some additional characteristic forms.
Pronunciation of English ⟨wh⟩The pronunciation of the digraph in English has changed over time, and still varies today between different regions and accents. It is now most commonly pronounced /w/, the same as a plain initial , although some dialects, particularly those of Scotland, Ireland, and the Southern United States, retain the traditional pronunciation /hw/, generally realized as ʍ, a voiceless "w" sound. The process by which the historical /hw/ has become /w/ in most modern varieties of English is called the wine–whine merger.
Grimm's lawGrimm's law (also known as the First Germanic Sound Shift) is a set of sound laws describing the Proto-Indo-European (PIE) stop consonants as they developed in Proto-Germanic in the 1st millennium BC. First discovered by Rasmus Rask but systematically put forward by Jacob Grimm, it establishes a set of regular correspondences between early Germanic stops and fricatives and stop consonants of certain other centum Indo-European languages. Grimm's law was the first discovered systematic sound change, creating historical phonology as a separate historical linguistics discipline.
IsoglossAn isogloss, also called a heterogloss (see Etymology below), is the geographic boundary of a certain linguistic feature, such as the pronunciation of a vowel, the meaning of a word, or the use of some morphological or syntactic feature. Major dialects are typically demarcated by bundles of isoglosses, such as the Benrath line that distinguishes High German from the other West Germanic languages and the La Spezia–Rimini Line that divides the Northern Italian languages and Romance languages west of Italy from Central Italian dialects and Romance languages east of Italy.
Lombardic languageLombardic or Langobardic is an extinct West Germanic language that was spoken by the Lombards (Langobardi), the Germanic people who settled in Italy in the sixth century. It was already declining by the seventh century because the invaders quickly adopted the Latin vernacular spoken by the local population. Lombardic may have been in use in scattered areas until as late as 1000 AD. Many toponyms in modern Lombardy and Greater Lombardy (Northern Italy) and items of Lombard and broader Gallo-Italic vocabulary derive from Lombardic.
Ingvaeonic nasal spirant lawIn historical linguistics, the Ingvaeonic nasal spirant law (also called the Anglo-Frisian or North Sea Germanic nasal spirant law) is a description of a phonological development that occurred in the Ingvaeonic dialects of the West Germanic languages. This includes Old English, Old Frisian, and Old Saxon, and to a lesser degree Old Dutch (Old Low Franconian). The sound change affected sequences of vowel + nasal consonant + fricative consonant. ("Spirant" is an older term for "fricative".
