Library / English Dictionary

AGAR

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A colloidal extract of algae; used especially in culture media and as a gelling agent in foods

Synonyms:

agar; agar-agar

Classified under:

Nouns denoting substances

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

gum (any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying)

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

agar; nutrient agar (any culture medium that uses agar as the gelling agent)

Sense 2

Meaning:

Any culture medium that uses agar as the gelling agent

Synonyms:

agar; nutrient agar

Classified under:

Nouns denoting substances

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

culture medium; medium ((bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms)

Meronyms (substance of "agar"):

agar; agar-agar (a colloidal extract of algae; used especially in culture media and as a gelling agent in foods)

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

blood agar (a culture medium containing whole blood as the nutrient)

Credits

 Context examples: 

This species is motile by peritrichous flagella, catalase and indole positive, oxidase negative, positive for lysine decarboxylase, and can grow on cefsulodin irgasan novobiocin agar in culture.

(Kluyvera ascorbata, NCI Thesaurus)

A bacterium that is assigned to the genus Streptococcus that is able to facilitate the complete rupturing of red blood cells, thus producing wide, clear, zones around colonies on blood agar plates.

(Beta-Hemolytic Streptococcus, NCI Thesaurus)

This bacteria is catalase negative, hemolytic on human blood agar plates and grows best in culture with added carbon dioxide and blood.

(Arcanobacterium haemolyticum, NCI Thesaurus)

A method used to detect organisms that have resistance to a single concentration of antibiotics in an agar matrix.

(Antibiotic Agar Screening Method, NCI Thesaurus)

This species is nonmotile, oxidase negative, urease and citrate positive, does not reduce nitrate, and grows on MacConkey agar.

(Bordetella parapertussis, NCI Thesaurus)

This bacteria is nonmotile, catalase and oxidase positive, non-fermentative, indole positive, hydrolyzes starch and can grow on cetrimide agar.

(Chryseobacterium indologenes, NCI Thesaurus)

A type of electrophoresis that uses a matrix of highly purified agar to separate large molecules.

(Agarose Gel Electrophoresis, NCI Thesaurus)

This species is motile by peritrichous flagella, does not produce H2S in TSI agar, grows in media containing KCN, produces acid from adonitol and D-arabitol and does not decarboxylate lysine.

(Citrobacter koseri, NCI Thesaurus)

This species is motile by peritrichous flagella, citrate, indole and adonitol positive, hydrogen sulfide negative in Kliger's agar, phenylalanine negative and does not grow in KCN medium.

(Citrobacter farmeri, NCI Thesaurus)

A bacterium that is assigned to the genus Streptococcus that is able to reduce the iron content in hemoglobin in red blood cells, thus producing green colored colonies on blood agar plates.

(Alpha-Hemolytic Streptococcus, NCI Thesaurus)