sis

sis

[sis]
noun Informal.

Origin:
1825–35, Americanism; shortened form; compare Dutch zus for zuster sister

Dictionary.com Unabridged

-sis

a suffix appearing in loanwords from Greek, where it was used to form from verbs abstract nouns of action, process, state, condition, etc.: thesis; aphesis.

Origin:
< Greek

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
sis1 (sɪs)
 
n
informal short for sister

sis or sies2 (sɪs, siːs, sɪs, siːs)
 
interj
informal (South African) an exclamation of disgust
 
[Afrikaans, possibly from Khoi]
 
sies or sies2
 
interj
 
[Afrikaans, possibly from Khoi]

SIS
 
abbreviation for
1.  Also called: MI6 (in Britain) Secret Intelligence Service
2.  (in New Zealand) Security Intelligence Service

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

sis
1656, abbreviated form of sister; in Amer.Eng., applied generally to girls and young women (1859).

-sis
suffix in Gk. nouns denoting action, process, state, condition, from Gk. -sis, which is identical in meaning with L. -entia, Eng. -ing.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
SIS
National Library of Medicine [Specialized Information Services]
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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