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Fidelity is a notion that at its most abstract level implies a truthful connection to a source or sources. Its original meaning dealt with loyalty and attentiveness to one's duty to a lord or a king, in a broader sense than the related concept of fealty. Both derive from the Latin word fidelitas, meaning "faithfulness." Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 151 languages. ... Duty is a term loosely appliedDuty to any action (or course of action) whichDutyDuty is regarded as morally incumbent, apart from personal likes and dislikes or any external compulsion. ... Lordship redirects here. ... Louis XIV, king of France and Navarre (Painting by Hyacinthe Rigaud, 1701). ... Roland pledges his fealty to Charlemagne; from a manuscript of a chanson de geste. ... For other uses, see Latins and Latin (disambiguation). ...

In modern human relationships, the term can refer to sexual monogamy. In western culture this often means adherence to marriage vows, or of promises of exclusivity or monogamy, and an absence of adultery. However, some people do not equate fidelity in personal relationships with sexual or emotional monogamy. (For example, see polyamory and Open marriage.) This article is about modern humans. ... An interpersonal relationship is some relationship or connection between two people. ... Faithfulness redirects here. ... Matrimony redirects here. ... This article is about the act of adultery. ... Polyamory (from Greek (, literally “multiple”) and Latin (literally “love”)) is the desire, practice, or acceptance of having more than one loving, intimate relationship at a time with the full knowledge and consent of everyone involved. ... Open marriage typically refers to a marriage in which the partners agree that each may engage in extramarital sexual relationships, without this being regarded as infidelity. ...

Fidelity also denotes how accurate a copy is to its source. For example, a worn gramophone record will have a lower fidelity than one in good condition, and a recording made by a low budget record company in the early 20th century is likely to have significantly less audio fidelity than a good modern recording. In the 1950s, the terms "high fidelity" or "hi-fi" were popularized for equipment and recordings designed for more accurate sound reproduction, while "lo-fi" music aims for "authenticity" over perfect production. Similarly in electronics, fidelity refers to the correspondence of the output signal to the input signal, rather than sound. A 12-inch record (left), a 7-inch record (right), and a CD (above) Two 7 singles (left), two colored 7 singles (middle), and two 7 singles with large spindle holes (right). ... High Fidelity is also the title of a book by Nick Hornby and a film directed by Stephen Frears, based upon Hornbys book. ... Sound reproduction is the electrical or mechanical re-creation and/or amplification of sound, often as music. ... Lo-fi — from Low Fidelity — describes a sound recording which contains accidental artifacts, like distortion, or environmental noise, or a recording which has a limited frequency response. ... Surface mount electronic components Electronics is the study of the flow of charge through various materials and devices such as semiconductors, resistors, inductors, capacitors, nano-structures and vacuum tubes. ...

The computer age has spawned the term Wi-Fi in reference to certain groups of wireless electronic devices. While the term Wi-Fi has been popularly taken to be an abbreviation of 'wireless fidelity', Wi-Fi is in fact a commercial brand owned by the Wi-Fi Alliance, and has little to do with fidelity as a concept. Wi-Fi (IPA: ) is the common name for a popular wireless technology used in home networks, mobile phones, video games and more. ... For other uses, see Wireless (disambiguation). ... Wi-Fi (IPA: ) is the common name for a popular wireless technology used in home networks, mobile phones, video games and more. ... Wi-Fi (IPA: ) is the common name for a popular wireless technology used in home networks, mobile phones, video games and more. ... Official Wi-Fi logo The Wi-Fi Alliance is a trade group that owns the trademark to Wi-Fi. ...