di

¹

or Di

[ dee ]

preposition

1. from; of: used in Italian personal names, originally to indicate place of origin:

   Conte di Savòia.

di-

²

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 ).

di

³

[ dee ]

noun

, Music.

1. a tone in the ascending chromatic scale between do and re.

di-

⁴

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

di-

⁵

1. variant of dia- before a vowel:

   diorama.

Di

⁶

[ dahy ]

noun

1. a female given name, form of Diana.

Di

⁷

Symbol, Chemistry.

1. didymium.

DI

⁸

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

di.

⁹

or dia

abbreviation for

1. diameter.

DI

¹

abbreviation for

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

di-

²

combining_form

1. variant of dia-

   diopter

di-

³

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

Di

⁴

the chemical symbol for

1. didymium

di–

1. A prefix that means “two,” “twice,” or “double.” It is used commonly in chemistry, as in dioxide, a compound having two oxygen atoms.

Word History and Origins

Origin of di¹

< Italian < Latin dē

Origin of di²

Middle English ≪ Latin < Greek, combining form representing dís twice, double, akin to dýo two. See bi- ¹, twi-

Origin of di³

Perhaps alteration of do ²

Word History and Origins

Origin of di¹

via Latin from Greek, from dis twice, double, related to duo two. Compare bi- ¹

Example Sentences

Pepe Di’Iasio, general secretary of the Association of School and College Leaders, said there had to be policies in place to encourage regular attendance.

From BBC

Pepe Di’Iasio, general secretary of the Association of School and College Leaders, said there had to be policies in place to encourage regular attendance.

From BBC

A cause of death has been revealed for Iron Maiden alum Paul Di’Anno, who died last month at age 66.

From Los Angeles Times

At the time of Di’Anno’s death, his longtime label, Conquest Music, said he had been dealing with “several health issues” without offering further details.

From Los Angeles Times

Representatives for Di’Anno said Monday they had since received permission from the singer’s family to reveal the results of his autopsy.

From Los Angeles Times