-id

¹ American  

1. a suffix of nouns that have the general sense “offspring of, descendant of,” occurring originally in loanwords from Greek (Atreid; Nereid ), and productive in English on the Greek model, especially in names of dynasties, with the dynasty's founder as the base noun (Abbasid; Attalid ), and in names of periodic meteor showers, with the base noun usually denoting the constellation or other celestial object in which the shower appears (Perseid ).

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I'd ² American  

[ahyd] / aɪd /

1. contraction of I had:

   I'd never seen anything like it before!

2. contraction of I would:

   If I were you, I'd be careful what I wish for.

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id. ³ American  

abbreviation

1. idem.

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ID ⁴ American  

abbreviation

1. Idaho (approved especially for use with zip code).

2. infectious disease.

3. inner diameter, internal diameter, or inside diameter. Also i.d.

4. intellectual disability.

5. intelligent design.

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-id ⁵ American  

1. a suffix occurring in descriptive adjectives borrowed from Latin, often corresponding to nouns ending in -or1 : fetid; humid; pallid .

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ID. ⁶ American  

abbreviation

1. (in Iraq ) dinar; dinars.

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-id ⁷ American  

1. variant of -ide: lipid .

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Id. ⁸ American  

abbreviation

1. Idaho.

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ID ⁹ American  

[ahy-dee] / ˈaɪˈdi /

noun

1. a means of identification, as a card or bracelet containing official or approved identification information.

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verb (used with object)

ID'd, IDed, ID'ed, ID'ing, IDing

1. to identify.

2. to issue an ID to.

   Go to the admissions office if you haven't been ID'd yet.

-id ¹⁰ American  

1. a suffix occurring in English derivatives of modern Latin taxonomic names, especially zoological families and classes; such derivatives are usually nouns denoting a single member of the taxon or adjectives with the sense “pertaining to” the taxon: arachnid; canid .

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id ¹¹ American  

[id] / ɪd /

noun

Psychoanalysis.

1. the part of the psyche, residing in the unconscious, that is the source of instinctive impulses that seek satisfaction in accordance with the pleasure principle and are modified by the ego and the superego before they are given overt expression.

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I.D. ¹² American  

abbreviation

1. identification.

2. identity.

3. Military. Infantry Division.

4. Intelligence Department.

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-id ¹ British  

suffix

1. indicating the names of meteor showers that appear to radiate from a specified constellation

   Orionids (from Orion)

2. indicating a particle, body, or structure of a specified kind

   energid

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-id ² British  

suffix

1. a variant of -ide

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ID ³ British  

abbreviation

1. Idaho

2. identification (document)

3. Also: i.d.  inside diameter

4. Intelligence Department

5. Also: i.d.  intradermal

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id. ⁴ British  

abbreviation

1. idem

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-id ⁵ British  

suffix

1. indicating members of a zoological family

   cyprinid

2. indicating members of a dynasty

   Seleucid

   Fatimid

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id ⁶ British  

abbreviation

1. Indonesia

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Id. ⁷ British  

abbreviation

1. Idaho

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id ⁸ British  

/ ɪd /

noun

1. psychoanal the mass of primitive instincts and energies in the unconscious mind that, modified by the ego and the superego, underlies all psychic activity

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I'd ⁹ British  

/ aɪd /

contraction

1. I had or I would

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id Cultural  

1. In Freudian theory, the part of the psyche associated with instinctual, repressed, or antisocial desires, usually sexual or aggressive. In its efforts to satisfy these desires, the id comes into conflict with the social and practical constraints enforced by the ego and superego. (See also pleasure principle.)

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Usage

See contraction.

Etymology

Origin of -id¹

< Latin -id-, stem of -is < Greek: feminine patronymic suffix; or < Latin -idēs < Greek: masculine patronymic suffix

Origin of I'd¹

First recorded in 1590–1600

Origin of -id¹

From the Latin suffix -idus

Origin of ID¹

First recorded in 1935–40

Origin of -id¹

< Greek -idēs -id ¹, as singular of New Latin -ida -ida or -idae -idae

Origin of id¹

1920–25; < Latin id it, as a translation of German Es, special use of es it, as a psychoanalytic term

Origin of I.D.¹

First recorded in 1950–55

Example Sentences

She said she rolled her window down and an agent asked to see her ID.

From Los Angeles Times

The adjacent cottage, which was purchased by Hogan for $1.6 million in 2016, is not included in the sale because it is currently in the process of being “separated out to a separate tax ID,” according to information provided to Realtor.com.

From MarketWatch

It also criticised the planned introduction of digital ID cards.

From BBC

The secretary of Homeland Security has also waived applicable environmental laws for border projects, a power granted in the Real ID Act of 2005.

From Los Angeles Times

Satisfied, Zhao clicked "agree" on the terms displayed onscreen and keyed in her full name, ID number and bank account details, while her grandfather's ring was melted down into a smooth puddle on the live video feed.

From Barron's