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 dē

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.
didymium.

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 English ≪ Latin < 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.
diameter.
Also, dia.
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
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.

di in Medicine

di- pref.

  1. Two; twice; double: dichromatic.

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

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.
Slang definitions & phrases for di

DI

noun

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


Related Abbreviations for di

Di

didymium

DI

  1. diabetes insipidus
  2. diagnostic imaging
  3. donor insemination
  4. drill instructor
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

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