Definition of AD

noun, often attributive \ ˈad \

Updated on: 15 Nov 2017

Definition of ad

1 : advertisement 1

newspapers ads

TV ads for new cars

2 : advertising

an ad agency

Origin and Etymology of ad

by shortening

NEW! Time Traveler

First Known Use: 1799

See Words from the same year

noun

Definition of ad

: advantage 4

Origin and Etymology of ad

by shortening

NEW! Time Traveler

First Known Use: 1915

See Words from the same year

abbreviation

Definition of AD

1 active duty

2 after date

3 Alzheimer's disease

4 anno Domini —often printed in small capitals and often punctuated

5 assembly district

6 assistant director

7 athletic director

See AD defined for English-language learners

A/D

abbreviation

Definition of A/D

analog/digital

ad-

prefix

variants: or ac- or af- or ag- or al- or ap- or as- or at-

Definition of ad-

1 : to : toward —usually ac- before c, k, or q

acculturation

and af- before f

affluent

and ag- before g

aggradation

and al- before l

alliteration

and ap- before p

apportion

and as- before s

assuasive

and at- before t

attune

and ad- before other sounds but sometimes ad- even before one of the listed consonants

adsorb

2 : near : adjacent to —in this sense always in the form ad-

adrenal

See ad- defined for kids

Origin and Etymology of ad-

borrowed from Latin, prefix forming verbs and verbal derivatives, marking movement toward, tendency, addition, from ad, preposition, "to, as far as, at, near, in accordance with" — more at ¹at

-ad

adverb suffix

Definition of -ad

: in the direction of : toward

cephalad

Origin and Etymology of -ad

borrowed from Latin ad "to, toward" — more at ¹at

-ad

noun suffix

Definition of -ad

: member of a botanical group

bromeliad

Origin and Etymology of -ad

borrowed from New Latin -ad-, -as, borrowed from Greek -ad-, -as, feminine noun suffix denoting descent from or connection with

AD Defined for Kids

noun \ ˈad \

Definition of ad for Students

: advertisement

A.D.

abbreviation

Definition of A.D. for Students

in the year of our Lord Hint: A.D. is an abbreviation for the Latin phrase anno Domini, which means “in the year of our Lord.”

Medical Dictionary

abbreviation

medical Definition of AD

1 Alzheimer disease; Alzheimer's disease

2 atopic dermatitis

[Latin auris dextra]

right ear —used especially in audiology and in writing medical prescriptions

4 average deviation

Learn More about ad

See words that rhyme with ad Thesaurus: All synonyms and antonyms for ad Spanish Central: Translation of ad Nglish: Translation of ad for Spanish speakers Britannica English: Translation of ad for Arabic speakers

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Definition of ad

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Origin and Etymology of ad

ad

Definition of ad

Origin and Etymology of ad

AD

Definition of AD

A/D

Definition of A/D

ad-

Definition of ad-

Origin and Etymology of ad-

-ad

Definition of -ad

Origin and Etymology of -ad

-ad

Definition of -ad

Origin and Etymology of -ad

Phrases Related to AD

Related Phrases

AD Defined for Kids

ad

Definition of ad for Students

A.D.

Definition of A.D. for Students

Medical Dictionary

AD

medical Definition of AD

Learn More about ad

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