CD

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does CD mean? 

• CD (noun)
  The noun CD has 4 senses:

1. a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

2. the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin

3. a debt instrument issued by a bank; usually pays interest

4. a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser

  Familiarity information: CD used as a noun is uncommon.

• CD (adjective)
  The adjective CD has 1 sense:

1. being one hundred more than three hundred

  Familiarity information: CD used as an adjective is very rare.

 Dictionary entry details 

• CD (noun)

Sense 1

Meaning:

A soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

Classified under:

Nouns denoting substances

Synonyms:

atomic number 48; cadmium; Cd

Hypernyms ("Cd" is a kind of...):

metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)

Holonyms ("Cd" is a substance of...):

calamine; hemimorphite (a white mineral; a common ore of zinc)

Sense 2

Meaning:

The basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

candela; candle; cd; standard candle

Hypernyms ("cd" is a kind of...):

candlepower unit; luminous intensity unit (a measure of luminous intensity)

Sense 3

Meaning:

A debt instrument issued by a bank; usually pays interest

Classified under:

Nouns denoting possession and transfer of possession

Synonyms:

CD; certificate of deposit

Hypernyms ("CD" is a kind of...):

certificate of indebtedness; debt instrument; obligation (a written promise to repay a debt)

Hyponyms (each of the following is a kind of "CD"):

time deposit (a certificate of deposit from which withdrawals can be made only after advance notice or at a specified future date)

Sense 4

Meaning:

A digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser

Classified under:

Nouns denoting man-made objects

Synonyms:

CD; compact disc; compact disk

Hypernyms ("CD" is a kind of...):

optical disc; optical disk (a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface)

recording (a storage device on which information (sounds or images) have been recorded)

Hyponyms (each of the following is a kind of "CD"):

audio CD; audio compact disc (compact discs used to reproduce sound (voice and music))

CD-R; CD-WO; compact disc recordable; compact disc write-once (a compact disc on which you can write only once and thereafter is read-only memory)

CD-ROM; compact disc read-only memory (a compact disk that is used with a computer (rather than with an audio system); a large amount of digital information can be stored and accessed but it cannot be altered by the user)

• CD (adjective)

Sense 1

Meaning:

Being one hundred more than three hundred

Synonyms:

400; cd; four hundred

Similar:

cardinal (being or denoting a numerical quantity but not order)

 Context examples 

A propylene glycol-free intravenous formulation containing the hydrochloride salt of the nitrogen mustard phenylalanine derivative melphalan complexed with polyanionic sulfobutyl ether beta-cyclodextrin (SBE-CD) with potential antineoplastic activity.

(Melphalan Hydrochloride/Sulfobutyl Ether Beta-Cyclodextrin Complex, NCI Thesaurus)

Indene[1,2,3-cd]pyrene is reasonably anticipated to be a human carcinogen.

(Indeno[1,2,3-cd]pyrene, NCI Thesaurus)

Genetically-modified neural stem cells (NSCs) transfected with the Escherichia coli (E. coli) suicidal gene cytosine deaminase (CD), with potential antineoplastic adjuvant activity.

(E. coli CD-expressing Genetically Modified Neural Stem Cells, NCI Thesaurus)

A fully human anti-CD19 monoclonal antibody directed against the B-cell-specific membrane protein CD-19 with potential antineoplastic activity.

(Anti-CD19 Monoclonal Antibody MDX-1342, NCI Thesaurus)

Monoclonal antibody SGN-14 specifically binds to and inhibits CD-40, thereby inhibiting cell proliferation and inducing cell lysis via antibody-dependent cellular cytotoxicity (ADCC) in cells.

(Monoclonal Antibody SGN-14, NCI Thesaurus)

CD antigen expressed on surface of monocytes, macrophages, eosinophils, neutrophils; lipopolysaccharide receptor; signals production of tumor necrosis factor.

(Monocyte Differentiation Antigen CD14, NIH CRISP Thesaurus)

NOTE(S): Derived from PerformedObservation directly or indirectly linked to DefinedActivity.nameCode.CD.originaltext.

(Performed Clinical Result Inactive Comment, NCI Thesaurus/BRIDG)

They are positive for CD16, CD56, and CD 94.

(Natural killer cell, NCI Thesaurus)

FCU1 is a bifunctional yeast cytosine deaminase (CD) / uracil phosphoribosyltransferase (UPRT) fusion gene.

(MVA-FCU1 TG4023, NCI Thesaurus)

NOTE(S): The textual description of the activity is captured in the complex data type CD.

(Defined Activity Name Code, NCI Thesaurus/BRIDG)