Itonama is a moribund language isolate of Bolivia. Current distribution of Human Language Families Most languages are known to belong to language families. ... A language isolate, in the absolute sense, is a natural language with no demonstrable genealogical (or genetic) relationship with other living languages; that is, one that has not been demonstrated to descend from an ancestor common to any other language. ... Writing Systems of the World today A Specimen of typeset fonts and languages, by William Caslon, letter founder; from the 1728 Cyclopaedia. ... The Latin alphabet, also called the Roman alphabet, is the most widely used alphabetic writing system in the world today. ... ISO 639-1 is the first part of the ISO 639 international-standard language-code family. ... ISO 639-2:1998 Codes for the representation of names of languages — Part 2: Alpha-3 code Twenty-two of the languages have two three-letter codes: a code for bibliographic use (ISO 639-2/B) a code for terminological use (ISO 639-2/T). ... ISO 639-3 is in process of development as an international standard for language codes. ... The International Phonetic Alphabet (IPA) is a system of phonetic notation devised by linguists to accurately and uniquely represent each of the wide variety of sounds (phones or phonemes) used in spoken human language. ... Phonetics (from the Greek word φωνή, phone = sound/voice) is the study of sounds (voice). ... Because of technical limitations, some web browsers may not display some special characters in this article. ... This is a concise version of the International Phonetic Alphabet for English sounds. ... The English language is a West Germanic language that originates in England. ... A language is usually considered moribund (literally, dying) when it is no longer the language of the community, and is no longer learned by children, so that without massive intervention it will likely become extinct when the last of its current speakers dies. ... A language isolate, in the absolute sense, is a natural language with no demonstrable genealogical (or genetic) relationship with other living languages; that is, one that has not been demonstrated to descend from an ancestor common to any other language. ...

Phonology

Vowels

Diphthongs: /ai au/. Vowels Near-close Close-mid Mid Open-mid Near-open Open Where symbols appear in pairs, the one to the right represents a rounded vowel. ... A central vowel is a type of vowel sound used in some spoken languages. ... A back vowel is a type of vowel sound used in some spoken languages. ... A close vowel is a type of vowel sound used in many spoken languages. ... A mid vowel is a vowel sound used in some spoken languages. ... An open vowel is a vowel sound of a type used in most spoken languages. ... In phonetics, a diphthong (Greek δίφθογγος, diphthongos, literally with two sounds, or with two tones) is a vowel combination in a single syllable involving a quick but smooth movement from one vowel to another, often interpreted by listeners as a single vowel sound or phoneme. ...

Consonants

The postalveolar affricates /tʃ tʃʼ/ have alveolar allophones [ts tsʼ]. Variation occurs between speakers, and even within the speech of a single person. In phonetics, a bilabial consonant is a consonant articulated with both lips. ... Alveolar consonants are articulated with the tongue against or close to the superior alveolar ridge, which is called that because it contains the alveoli (the sockets) of the superior teeth. ... Postalveolar (or palato-alveolar) consonants are consonants articulated with the tip of the tongue between the alveolar ridge (the place of articulation for alveolar consonants) and the palate (the place of articulation for palatal consonants). ... Palatal consonants are consonants articulated with the body of the tongue raised against the hard palate (the middle part of the roof of the mouth). ... Velars are consonants articulated with the back part of the tongue (the dorsum) against the soft palate (the back part of the roof of the mouth, known also as the velum). ... Glottal consonants are consonants articulated with the glottis. ... A stop, plosive, or occlusive is a consonant sound produced by stopping the airflow in the vocal tract. ... Ejective consonants are a class of consonants which may contrast with aspirated or tenuis consonants in a language. ... A voiced consonant is a sound made as the vocal cords vibrate, as opposed to a voiceless consonant, where the vocal cords are relaxed. ... Affricate consonants begin as stops (most often an alveolar, such as or ), but release as a fricative such as or (or, in a couple of languages, into a fricative trill) rather than directly into the following vowel. ... Ejective consonants are a class of consonants which may contrast with aspirated or tenuis consonants in a language. ... Fricatives (or spirants) are consonants produced by forcing air through a narrow channel made by placing two articulators close together. ... A nasal consonant is produced when the velum—that fleshy part of the palate near the back—is lowered, allowing air to escape freely through the nose. ... Laterals are L-like consonants pronounced with an occlusion made somewhere along the axis of the tongue, while air from the lungs escapes at one side or both sides of the tongue. ... In phonetics, a flap or tap is a type of consonantal sound, which is produced with a single contraction of the muscles so that one articulator (such as the tongue) is thrown against another. ... Semivowels (also called semiconsonants or glides) are vowels that function phonemically as consonants. ...

The semivowel /w/ is realized as a bilabial fricative [β] when preceded and followed by identical vowels. The voiced bilabial fricative is a type of consonantal sound, used in some spoken languages. ...

References

• (Spanish) Crevels, Mily (2002). "Itonama o Sihnipadara, Lengua no clasificada de la Amazonía Boliviana". Estudios de Lingüística 16.