DI

abbr. Brit. Defence Intelligence.

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abbreviation

drill instructor

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di¹

/dee/, prep.

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

Also, Di.

[ < It < L de]

di²

/dee/, n. Music.

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

[perh. alter. of DO²]

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abbrev

1. Defence Intelligence

2. Detective Inspector

3. Diabetes insipidus

4. Donor insemination (see under ↑donation)

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DI UK [ˌdiː ˈaɪ] US [ˌdi ˈaɪ] noun [countable] [singular DI plural DIs]

Detective Inspector: a police officer of middle rank in the British police force

DI Taylor

Thesaurus: police officers_hyponym

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di «dee», noun.

a tone of the musical scale between do and re.

╂[variant of do²]

di.,

diameter.

di-¹,

prefix.

1. a) twice; double; twofold, as in dicotyledon. b) two; having two, as in digraph.

2. containing two atoms, radicals, or the like, of the substance specified, as in dioxide. Also, dis- before s.

╂[< Greek dís twice]

di-²,

prefix. the form of dis-² (Cf. ↑dis-) before b, d, l, m, n, r, s, v, and sometimes before g and j, as in direct, digress.

di-³,

prefix. the form of dia- (Cf. ↑dia-) before vowels, as in diorama.

Di (no period),

Chemistry. didymium.

DI (no periods) or D.I.,

1. disability insurance.

2. discomfort index.

3. drill instructor (in the U.S. Marine Corps).

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abbr. drill instructor

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DI [DI] [ˌdiː ˈaɪ] [ˌdiː ˈaɪ] abbreviation

Detective Inspector (a British police officer of middle rank)

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DI Ross