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a combining form with the meaning “high,” used in the formation of compound words:
altigram, altitude.
Also, alto-; especially before a vowel, alt-.
Origin of alti-
Middle English < Latin alti- combining form of altus high Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for alti


combining form
indicating height or altitude: altimeter
Word Origin
from Latin altus high
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
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