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singing voice the range of which is lower than the soprano by the interval of a fifth. More generally, the term refers to the register in which this voice sings, i.e., the second highest part in a four-part musical texture, and to instruments utilizing this register. See countertenorcountertenor,
a male singing voice in the alto range. Singing in this range requires either a special vocal technique called falsetto, or a high extension of the tenor range.
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(graphic arts)
The negative which is electrodeposited during the preparation of plates for printing currency.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


1. the highest adult male voice; countertenor
2. (in choral singing) a shortened form of contralto
3. a singer with such a voice
4. another name for viola
5. a flute, saxophone, etc., that is the third or fourth highest instrument in its group
6. denoting a flute, saxophone, etc., that is the third or fourth highest instrument in its group
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


(1) See Alto Mail.

(2) The desktop computer from Xerox that pioneered the mouse/icon/desktop environment. Developed at the Palo Alto Research Center (PARC) in 1973, it was the progenitor of Xerox's Star and Apple's Lisa and Mac. At PARC, Lawrence Tesler and Tim Mott helped design the Alto's user interface, and Tesler later went to work for Apple.

Alto specs were 128K RAM, 2.5MB hard drive, 608x808 resolution and Ethernet. By 1979, about 1,000 units were in use. See Xerox Star, GUI and PARC.

Alto Computer
The first graphical user interface created for business was working more than a decade before the Mac debuted in 1984. (Image courtesy of Palo Alto Research Center.)
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References in periodicals archive ?
Two-time women's defending champion Arellano, meanwhile, spoiled the fun for Perpetual after the Lady Chiefs bested the Lady Altas, 23-25, 25-9, 25-18, 22-25, 15-12, to forge a deciding Game 3 on Tuesday.
El fenomeno de la violencia genera altas tasas de desplazamiento forzado y tiene consecuencias sociales, economicas y culturales de transcendencia.
Seeded fourth in the semis, the Lady Altas ousted fancied St.
The victory also made up for the Lady Altas' stinging 26-28, 18-25, 27-29 defeat to the San Beda Lady Red Spikers last Thursday.
The rampaging Altas bucked a slow start before posting a 23-25, 25-17, 25-17, 25-23 trouncing of St.
The Altas rallied from dropping two of the first three sets to overcome the College of St.
The Altas, still on a high following their stunning upset of Lyceum last week, improved to 9-5 for fourth, but the Blazers, in the midst of one of their finest seasons since 2014, fell to fifth a full game behind with an 8-6 record.
Altas gun for sweep of 3 NCAA crowns !-- -- Joey Villar (The Philippine Star) - February 8, 2019 - 12:00am MANILA, Philippines Perpetual Help seeks a date with history as it aims for a rare triple kill in the 94th NCAA volleyball at the Filoil Flying V Center in San Juan.