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DI

 - 23 dictionary results

di

1  [dee]
Use DI in a Sentence
–preposition
from; of: used in Italian personal names, originally to indicate place of origin: Conte di Savòia.
Also, Di.

Origin:
< It < L dē

di

2  [dee]
–noun Music.
a tone in the ascending chromatic scale between do and re.
Origin:
perh. alter. of do 2

Di

  [dahy]
–noun
a female given name, form of Diana.

DI

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

Di

 
Symbol, Chemistry.
didymium.

di-

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:
ME ≪ L < Gk, comb. form repr. dís twice, double, akin to dýo two. See bi-, twi-

di-

2 
var. of dis- 1 before b, d, l, m, n, r, s, v, and sometimes g and j: digest; divide.

di-

3 
var. of dia- before a vowel: diorama.

di.

 
diameter.
Also, dia.

dia-

 
a prefix occurring in loanwords from Greek (diabetes; dialect) and used, in the formation of compound words, to mean “passing through” (diathermy), “thoroughly,” “completely” (diagnosis), “going apart” (dialysis), and “opposed in moment” (diamagnetism).
Also, especially before a vowel, di-.

Origin:
< Gk, comb. form repr. diá (prep.) through, between, across, by, of, akin to dýo two and di- di- 1

dis-

1 
a Latin prefix meaning “apart,” “asunder,” “away,” “utterly,” or having a privative, negative, or reversing force (see de-, un- 2 ); used freely, esp. with these latter senses, as an English formative: disability; disaffirm; disbar; disbelief; discontent; dishearten; dislike; disown.
Also, di-.

Origin:
< L (akin to bis, Gk dís twice); before f, dif-; before some consonants, di-; often r. obs. des- < OF
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To DI
Di  
The symbol for didymium.
DI  
abbr.  drill instructor
di·dym·i·um   (dī-dĭm'ē-əm)   
n.  

  1. Symbol Di A metallic mixture, once considered an element, composed of neodymium and praseodymium.

  2. A mixture of rare-earth elements and oxides used chiefly in manufacturing and coloring various forms of glass.


[From Greek didumos, twin, double; see dwo- in Indo-European roots.]
drill instructor  
n.   Abbr. DI
A noncommissioned officer who instructs recruits in military drill and discipline.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Word Origin & History

dis- 
prefix meaning 1. "lack of, not" (e.g. dishonest); 2. "do the opposite of" (e.g. disallow); 3. "apart, away" (e.g. discard), from O.Fr. des-, from L. dis- "apart," from PIE *dis- "apart, asunder" (cf. O.E. te-, O.S. ti-, O.H.G. ze-, Ger. zer-). The PIE root is a secondary form of *dwis- and is thus related to L. bis "twice" (originally *dvis) and to duo, on notion of "two-ways, in twain." Dis has even stepped out on its own as a word (1980), as a shortening of disrespect or dismiss, originally in U.S. Black English, popularized by hip hop slang.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: DI
Function: abbreviation
diabetes insipidus
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

di- pref.

  1. Two; twice; double: dichromatic.

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

dia- or di-
pref.

  1. Through: diapedesis.

  2. Across: diameter.

dis- pref.

  1. Not: disjugate.

  2. Absence of; opposite of: disorientation.

  3. Undo; do the opposite of: dislocate.

  4. Deprive of; remove: dismember.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Abbreviations & Acronyms
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.
Cite This Source
Encyclopedia

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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