See more. Sometimes 8va is used to tell the musician to play a passage an octave lower (when placed under rather than over the staff), though the similar notation 8vb (ottava bassa or ottava sotto) is also used. 8a or 8va stands for ottava, the Italian word for octave (or "eighth"); the octave above may be specified as ottava alta or ottava sopra).  Leon Crickmore recently proposed that "The octave may not have been thought of as a unit in its own right, but rather by analogy like the first day of a new seven-day week". Other interval qualities are also possible, though rare. Will octane 87 replace octane 80 in Egyptian petrol stations in November? Burns, Edward M. (1999). For this reason, notes an octave apart are given the same note name in the Western system of music notation—the name of a note an octave above A is also A. Any of these directions can be cancelled with the word loco, but often a dashed line or bracket indicates the extent of the music affected. For example, the C major scale is typically written C D E F G A B C (shown below), the initial and final C's being an octave apart. KBR acquires isomerization technologies from RRT Global, KBR Acquires Isomerisation Technologies to Expand Octane Solutions Offerings, STANDARD SPECIFICATION FOR UNLEADED PETROL COMES INTO EFFECT FROM JULY 21, Fuel prices slashed under monthly pricing formula, Gasoline Octane Improvers Market Key opportunities Prioritized and Share by Application Till 2029, Gasoline Octane Improvers Market Inclinations Exhibit Growing Demand during the Period until 2029, Fiat Chrysler launches Dodge Charger SRT Hellcat Octane Edition, PSO launches RON 97 fuel to deliver superior engine performance. See the full definition for octane in the English Language Learners Dictionary, Britannica.com: Encyclopedia article about octane. n. 1. (1962). Here Be Dragons: A Creature Identification Quiz. and the reciprocal of that series. , An 88-key piano, with the octaves numbered and, An example of the same three notes expressed in three ways: (1) regularly, (2) in an, Demonstration of octave equivalence. The ratio of frequencies of two notes an octave apart is therefore 2:1. Define octane. Any of various isomeric alkanes with the formula C8H18, found in petroleum and used as a fuel and solvent. In. Sure, there are some potential recruits whose backstories provide them access to special skills or high-, After a delayed start this year, the Wildcats exhibited a high-, The University of Arkansas intercepted six Matt Corral passes and returned two for touchdowns to stun high-, At one point, Ramos was pulled into the high-, Post the Definition of octane to Facebook, Share the Definition of octane on Twitter, On ‘Corps’ and ‘Core’ and ‘Corp’ (and ‘Corpse’). Octane definition, any of 18 isomeric saturated hydrocarbons having the formula C8H18, some of which are obtained in the distillation and cracking of petroleum. In Western music notation, notes separated by an octave (or multiple octaves) have the same letter name and are of the same pitch class.  The interval between the first and second harmonics of the harmonic series is an octave. How to use octane in a sentence. Please tell us where you read or heard it (including the quote, if possible). ", The abbreviations col 8, coll' 8, and c. 8va stand for coll'ottava, meaning "play the notes in the passage together with the notes in the notated octaves". (Elements & Compounds) a liquid alkane hydrocarbon found in petroleum and existing in 18 isomeric forms, esp the isomer, any of 18 isomeric saturated hydrocarbons having the formula C, Any of several hydrocarbon compounds having the formula C, The privately-run FPCC said prices at its gas stations will be NT$26.6 per liter for 92, Moreover, the possible hike in transpiration costs could also impact the prices of goods and products, since some freight transport vehicles also use, KBR, in alliance with RRT Global, has been offering MAX-ISOM catalytic distillation technology for the isomerization of C5 and C6 n-paraffins to boost gasoline pool, 12 August 2019 - US-based professional services and technologies provider KBR (NYSE: KBR) has acquired isomerisation technologies from RRT Global that will enable KBR to offer expanded, The specification also talks about the chemical and physical requirements of petrol such as the limits of, Fiat Chrysler Automobiles, a company formed by the reorganisation of Fiat and Chrysler, has launched blacked-out appearance package and added the Dodge Charger SRT Hellcat, Speaking about the introduction of Altron X Hi-, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content. Demany L, Armand F. The perceptual reality of tone chroma in early infancy. Western music consists of 12 identifiable pitches, and those pitches repeat in the same order throughout the complete span of human hearing. Octave, in music, an interval whose higher note has a sound-wave frequency of vibration twice that of its lower note. In this notation, middle C is C4, because of the note's position as the fourth C key on a standard 88-key piano keyboard, while the C an octave higher is C5. Thus the international standard pitch A above middle C vibrates at 440 hertz (cycles per second); the octave above this A vibrates at 880 hertz, while the octave below it vibrates In music, an octave (Latin: octavus: eighth) or perfect octave (sometimes called the diapason) is the interval between one musical pitch and another with double its frequency.