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The seventh tone in the diatonic scale in solfeggio.
[Alteration of si.]
n. pl. tis
A tropical ornamental shrub (Cordyline fruticosa) native to Southeast Asia and Polynesia, having a terminal tuft of long narrow leaves and panicles of white, yellowish, or reddish flowers.
[Tahitian and Maori tī.]
The symbol for titanium.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a contraction of it is.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.