alt

[ alt ]
/ ælt /
Music.

adjective

noun

in alt, in the first octave above the treble staff.

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Origin of alt

1525–35; < Provençal < Latin altum, noun use of neuter of altus high

Definition for alt (2 of 4)

Alt key
[ awlt ]
/ ɔlt /

noun Computers.

either of two keys on a PC keyboard that is held down while pressing another key, as to perform a specific operation or type a special character.
Also called Alt

Origin of Alt key

First recorded in 1980–85

Definition for alt (3 of 4)

alt-

variant of alti- before a vowel: altazimuth.

Definition for alt (4 of 4)

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for alt

British Dictionary definitions for alt

alt
/ (ælt) music /

adjective

(esp of vocal music) high in pitch
of or relating to the octave commencing with the G above the top line of the treble staff

noun

in alt in the octave directly above the treble staff

Word Origin for alt

C16: from Provençal, from Latin altus high, deep
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for alt

ALT
[ ā′ĕl-tē ]

n.

alanine aminotransferase
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.