the blood group whose red cells carry the A antigen
<noun.body>

A

group A

type A

the 1st letter of the Roman alphabet
<noun.communication>

A

a

the basic unit of electric current adopted under the Systeme International d'Unites
<noun.quantity>   freq. cnt.: 4 freq. cnt.: 4

A

amp

ampere

sample sentences

"a typical household circuit carries 15 to 50 amps"

a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
<noun.quantity>

A

angstrom

angstrom unit

(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
<noun.substance>

A

adenine

one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
<noun.substance>

A

deoxyadenosine monophosphate

any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
<noun.substance>

A

antiophthalmic factor

axerophthol

vitamin A

the battery used to heat the filaments of a vacuum tube
<noun.artifact>

A battery

the top layer of a soil profile; usually contains humus
<noun.location>

A horizon

A-horizon

the advanced level of a subject taken in school (usually two years after O level)
<noun.state>

A level

the Israeli military intelligence which produces comprehensive national intelligence briefings for the prime minister and the cabinet
<noun.group>

A'man

a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239)
<noun.artifact>   freq. cnt.: 3 freq. cnt.: 2 freq. cnt.: 1

A-bomb

atom bomb

atomic bomb

fission bomb

plutonium bomb

the top layer of a soil profile; usually contains humus
<noun.location>

A horizon

A-horizon

women's clothing that has a fitted top and a flared skirt that is widest at the hemline
<noun.artifact>

A-line

sample sentences

"it is called the A-line because the effect resembles the capital letter A"

a list of names of specially favored people
<noun.communication>

A-list

sample sentences

"the boss gave me his A-list of people we should try to recruit"

of the highest quality
<adj.all>   (p)   freq. cnt.: 7 freq. cnt.: 3 freq. cnt.: 2 freq. cnt.: 1 freq. cnt.: 1

A-one

ace

crack

first-rate

super

tiptop

top-notch

topnotch

tops

sample sentences

"an ace reporter"
"a crack shot"
"a first-rate golfer"
"a super party"
"played top-notch tennis"
"an athlete in tiptop condition"
"she is absolutely tops"

the use of ultrasonography to measure the length of the eyeball
<noun.act>

A-scan ultrasonography

a group of elite soldiers or a leadership group of advisors or workers in an organization
<noun.group>

A-team

United States physicist (born in Germany) who collaborated with Morley in the Michelson-Morley experiment (1852-1931)
<noun.person>

A. A. Michelson

Albert Abraham Michelson

Albert Michelson

Michelson

English writer of stories for children (1882-1956)
<noun.person>

A. A. Milne

Alan Alexander Milne

Milne

British author who created Sherlock Holmes (1859-1930)
<noun.person>

A. Conan Doyle

Arthur Conan Doyle

Conan Doyle

Sir Arthur Conan Doyle

United States general in the American Civil War who was defeated by Robert E. Lee at the Battle of Fredericksburg (1824-1881)
<noun.person>

A. E. Burnside

Ambrose Everett Burnside

Burnside

English poet (1859-1936)
<noun.person>

A. E. Housman

Alfred Edward Housman

Housman

United States electrical engineer noted for his work on the theory of alternating currents; independently of Oliver Heaviside he discovered the existence of an atmospheric layer that reflects radio waves back to earth (1861-1939)
<noun.person>

A. E. Kennelly

Arthur Edwin Kennelly

Kennelly

English writer (1865-1948)
<noun.person>

A. E. W. Mason

Alfred Edward Woodley Mason

Mason

United States linguist whose theory of generative grammar redefined the field of linguistics (born 1928)
<noun.person>

A. Noam Chomsky

Chomsky

Noam Chomsky

a small perch of India whose gills are modified to allow it to breathe air; has spiny pectoral fins that enable it to travel on land
<noun.animal>

A. testudineus

Anabas testudineus

climbing perch

in the Christian era; used before dates after the supposed year Christ was born
<adv.all>

A.D.

AD

anno Domini

sample sentences

"in AD 200"

Irish writer whose pen name was A.E. (1867-1935)
<noun.person>

A.E.

George William Russell

Russell

before noon
<adv.all>

A.M.

ante meridiem

sample sentences

"let's meet at 11 A.M."

an appliance designed to extract humidity from the air and thereby cool it
<noun.artifact>

A/C

air conditioner

air-conditioner

sample sentences

"we rarely turn on the air-conditioner"

an associate degree in arts
<noun.communication>

AA

Associate in Arts

an international organization that provides a support group for persons trying to overcome alcoholism
<noun.group>

AA

Alcoholics Anonymous

an aneurysm of the abdominal aorta associated with old age and hypertension
<noun.state>

AAA

abdominal aortic aneurysm

an association of people to promote the welfare of senior citizens
<noun.group>

AARP

Association for the Advancement of Retired Persons

an associate degree in applied science
<noun.communication>

AAS

Associate in Applied Science

a nonstandard form of American English characteristically spoken by African Americans in the United States
<noun.communication>

AAVE

African American English

African American Vernacular English

Black English

Black English Vernacular

Black Vernacular

Black Vernacular English

Ebonics