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di1

[dee] /di/
preposition
1.
from; of: used in Italian personal names, originally to indicate place of origin:
Conte di Savòia.
Also, Di.
Origin
< Italian < Latin

di2

[dee] /di/
noun, Music.
1.
a tone in the ascending chromatic scale between do and re.
Origin
perhaps alteration of do2

Di

[dahy] /daɪ/
noun
1.
a female given name, form of Diana.

DI

1.
Department of the Interior.
2.
drill instructor.

Di

Symbol, Chemistry
1.

di-1

1.
a prefix occurring in loanwords from Greek, where it meant “two,” “twice,” “double” (diphthong); on this model, freely used in the formation of compound words (dicotyledon; dipolar) and in chemical terms (diatomic; disulfide).
Also, dis-2 .
Compare mono-.
Origin
Middle EnglishLatin < Greek, combining form representing dís twice, double, akin to dýo two. See bi-, twi-

di-2

1.
variant of dis-1. before b, d, l, m, n, r, s, v, and sometimes g and j: digest; divide.

di-3

1.
variant of dia- before a vowel:
diorama.

di.

1.
Also, dia.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for di

Di

Chemical symbol
1.
didymium

DI

abbreviation
1.
Defence Intelligence
2.
Detective Inspector
3.
Donor Insemination

di-1

prefix
1.
twice; two; double: dicotyledon
2.
  1. containing two specified atoms or groups of atoms: dimethyl ether, carbon dioxide
  2. a nontechnical equivalent of bi-1 (sense 5c)
Word Origin
via Latin from Greek, from dis twice, double, related to duo two. Compare bi-1

di-2

combining form
1.
variant of dia- diopter
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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Word Origin and History for di

di-

word-forming element meaning "two, double, twice," from Greek di-, from dis "twice," related to duo (see two).

word-forming element meaning "apart, asunder," form of dis- before certain voiced consonants.

word-forming element meaning "through; thoroughly," form of dia- before vowels.

Online Etymology Dictionary, © 2010 Douglas Harper
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di in Medicine

di- pref.

  1. Two; twice; double: dichromatic.

  2. Containing two atoms, radicals, or groups: diiodide.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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di in Science
di-  
A prefix that means "two," "twice," or "double." It is used commonly in chemistry, as in dioxide, a compound having two oxygen atoms.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Slang definitions & phrases for di

DI

noun

A drill instructor; noncommissioned officer in charge of recruits (1913+ Marine Corps)


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for di

Di

didymium

DI

  1. diabetes insipidus
  2. diagnostic imaging
  3. donor insemination
  4. drill instructor
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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Encyclopedia Article for di

in music, transverse (or side-blown) bamboo flute of the Han Chinese. Traditional di have a membrane of bamboo or reed tissue covering the hole that is located between the mouth hole and the six finger holes. This membrane creates a distinctive sound characteristic of much Chinese flute music. An additional two or more end holes aid in the expulsion of air and are sometimes used to attach decorative silk tassles. Di have a two-octave range, and complete modern sets can be purchased in Western tunings. There are many varieties of traditional lengths and construction

Learn more about di with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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