Dictionary.com

alt

[ alt ]
/ ælt /
Music.
Save This Word!

adjective

noun

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

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of alt

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

Definition for alt (2 of 4)

alt-1

variant of alti- before a vowel: altazimuth.

Definition for alt (3 of 4)

alt-2

a combining form of alternative, used in compound words describing a nontraditional or unconventional version within a genre or category, often something provocative, subversive, or innovative: alt-country bands; the alt-right movement;alt-weeklies;writers of alt-lit;quinoa and other alt-grains.

Origin of alt-

2
First recorded in 1985–90; from the use of the prefix alt- in Usenet, to denote newsgroups with unconventional discussion topics

Definition for alt (4 of 4)

alt.

abbreviation

alteration.
alternate.
altitude.
alto.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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.
Book Your Online Tutor Now