| Subject | English | Spanish |
| med. | acid-fast bacteria | bacterias acidorresistentes |
| agric., el. | acid-producing bacteria | bacterias acidógenas |
| agric., el. | acid-producing bacteria | bacterias acidificantes |
| biotechn. | acid-tolerant cellulolytic rumen bacterium | bacteria celulolítica del rumen tolerante a los ácidos |
| bacteriol. | asporogenous bacterium | bacteria asporógena |
| med. | bacteria atrichica | atriquio |
| environ. | bacteria bed arm | distribuidor rotativo del lecho bacteriano |
| environ. | bacteria bed arm | boquillas de pulverización fija del lecho bacteriano |
| life.sc. | bacteria content | cuantificación de las bacterias |
| life.sc. | bacteria content | contenido en gérmenes |
| life.sc. | bacteria content | contenido de gérmenes |
| life.sc. | bacteria content | contenido bacteriano |
| environ. | bacteria feeding on oil | bacteria que se nutre de petróleo |
| med. | bacteria nitrogen-connectives | bacterias nitrificadoras |
| chem. | bacteria test | análisis bacteriológico |
| med. | Bacterium aertrycke | bacilo de Aertrycke (Salmonella typhimurium, Bacterium typhimurium) |
| med. | Bacterium aertrycke | bacilo de Nocard (Salmonella typhimurium, Bacterium typhimurium) |
| med. | Bacterium aeruginosum | Pseudomonas aeruginosa (Bacillus pyocyaneus, Pseudomonas aeruginosa, Pseudomonas pyocyanea) |
| med. | Bacterium aeruginosum | bacilo piociánico (Bacillus pyocyaneus, Pseudomonas aeruginosa, Pseudomonas pyocyanea) |
| med. | Bacterium alcalescens | Bacterium alcalescens |
| med. | Bacterium alcalescens | Shigella alcalescens |
| med. | Bacterium coli | Bacillus coli (Escherichia coli) |
| med. | Bacterium coli | colibacilo (Escherichia coli) |
| med. | Bacterium coli | Escherichia coli |
| med. | Bacterium duplex Morax-Axenfeld | diplococo de Morax-Axenfeld (Moraxella lacunata) |
| med. | Bacterium duplex Morax-Axenfeld | diplobacilo de Morax (Moraxella lacunata) |
| health., nat.sc. | bacterium of the rhizosphere of graminaceae | bacteria de la rizosfera de las gramíneas |
| microbiol. | bacterium soft rot | podredumbre blanda bacteriana |
| med. | Bacterium sonnei | Shigella sonnei |
| life.sc. | blue-green bacteria | cianoficeas (Cyanobacteria, Cyanophyceae, Cyanophycota, Cyanophyta) |
| health. | build up of bacteria | proliferación bacteriana |
| nat.res., agric. | citrus greening bacterium | bacteria del verdeo del género citrus |
| environ. | coliform bacteria | coliforme |
| med. | coliform bacteria | colibacilos |
| med. | coliform bacteria | coliformes |
| med. | coliform bacteria | bacterias coliformes |
| environ. | coliform bacterium | bacteria coliforme |
| environ. | coliform bacterium A group of bacteria that are normally abundant in the intestinal tracts of human and other warm-blooded animals and are used as indicators (being measured as the number of individuals found per millilitre of water) when testing the sanitary quality of water | bacteria coliforme |
| food.ind. | coliform bacterium | bacteria coliforme (Escherichia coli.) |
| med. | colonic bacterium | bacteria cólica |
| med. | colonic bacterium | bacteria colónica |
| life.sc. | commensal bacterium | bacteria comensal |
| chem. | competent donor bacterium cell | bacteria donante competente |
| nat.sc. | denitrifying bacteria | bacteria desnitrificante |
| gen. | facultatively anaerobic bacterium | bacteria facultativa |
| environ. | faecal bacterium | bacteria fecal |
| environ. | faecal bacterium Bacteria contained in human and animal faeces | bacteria fecal |
| health. | fecal coliform bacteria | bacteria coliforme fecal |
| med. | fermentative bacteria | bacterias cimógenas |
| med. | filament-forming bacteria | bacterias filamentosas |
| bacteriol. | filamentous bacterium | bacteria filamentosa |
| bacteriol. | free living bacterium | bacteria viva libre |
| med. | fusiform bacteria | bacterias fusiformes |
| bacteriol. | Gram-negative bacterium | bacteria gramnegativa |
| bacteriol. | Gram-positive bacterium | bacteria grampositiva |
| med. | growth of bacteria | proliferación bacteriana |
| bacteriol. | heterofermentative bacterium | bacteria heterofermentativa |
| bacteriol. | higher bacterium | bacteria superior |
| bacteriol. | homofermentative bacterium | bacteria homofermentativa |
| med. | homologous bacteria | bacterias homólogas |
| med. | hospital bacteria | gérmenes hospitalarios |
| med. | hospital bacteria | bacterias hospitalarias |
| microbiol. | host bacterium | bacteria huésped |
| med. | ice-forming bacteria | bacteria inductora de escarcha |
| med. | ice-minus bacteria | bacteria antiescarcha |
| med. | ice-nucleating bacteria | bacteria inductora de escarcha |
| med. | ice-nucleation-active bacteria | bacteria inductora de escarcha |
| med. | INA-bacteria | bacteria antiescarcha |
| med. | INA+ bacteria | bacteria inductora de escarcha |
| gen. | incubators for bacteria culture | incubadoras para el cultivo bacteriano |
| life.sc. | indicator commensal bacterium | bacteria indicadora comensal |
| med. | infectious bacteria | bacterias infecciosas |
| chem. | iron bacteria | bacterias del hierro |
| nat.sc. | iron bacterium | bacteria del hierro |
| microbiol. | lactic bacterium | fermento láctico Streptococcus lactis |
| med. | lactic-acid bacterium | bacteria láctica (Streptococcus lactis, Streptococcus acidi lactici) |
| med. | lactic-acid bacterium | Streptococcus acidi lactici (Streptococcus lactis, Streptococcus acidi lactici) |
| health. | lactio bacterium | fermento lactico (Streptococcus lactis) |
| nat.sc. | Legionella bacteria | bacterias Legionella |
| nat.sc. | Leptospira bacteria | bacterias Leptospira |
| nat.sc. | luminescent bacterium | bacteria luminiscente |
| microbiol. | lysogenic bacterium | lisógeno |
| microbiol. | lysogenic bacterium | bacteria lisogénica |
| food.ind. | mesophilic bacterium | bacteria mesófila |
| agric. | methane-producing bacterium | bacterias metanógenas |
| agric. | methane-producing bacterium | bacterias metanogénicas |
| med. | methane-utilizing bacterium | metilobacteria |
| agric. | methanogenic bacterium | bacterias metanogénicas |
| agric. | methanogenic bacterium | bacterias metanógenas |
| med. | multidrug-resistant bacterium | bacteria multirresistente |
| med. | multiple-drug resistant bacterium | bacteria multirresistente |
| nat.sc. | nitrifying bacteria | bacteria nitrificante |
| med. | nitrifying bacteria | bacterias nitrificantes |
| nat.sc. | nitrogen cycle bacterium | bacteria del ciclo del nitrógeno |
| environ. | nitrogen-fixing bacteria | bacteria fijadora del nitrógeno |
| nat.sc. | nitrogen-fixing bacteria | bacteria fijadora de nitrógeno |
| agric. | nitrogen-fixing bacteria | bacteris nitrificantes |
| agric. | nodule bacteria | bacterias nodulares (Rhizobium leguminosarum) |
| nat.res. | nodule bacteria | bacteria del género Rhizobium |
| nat.res. | nodule bacteria | bacteria radicícola (Rhizobium) |
| nat.res. | nodule bacteria | risobio (Rhizobium) |
| nat.res. | nodule bacteria | bacteria de nudosidad (Rhizobium) |
| agric. | nodule bacteria | bacterias radicícolas (Rhizobium leguminosarum) |
| agric. | nodule bacteria | bacterias de las nudosidades (Rhizobium leguminosarum) |
| med. | opportunistic infection of bacterium | infección oportunista bacteriana |
| bacteriol. | oxidase-positive bacterium | bacteria oxidasa-positiva |
| food.ind. | pathogenic bacterium | bacteria patógena |
| nat.sc. | photoautotrophic bacterium | bacteria fotoautótrofa |
| genet. | plant pathogenic bacterium | bacteria fitopatogénica |
| biotechn. | predominant fibre-digesting bacterium | bacteria que digiere principalmente fibra |
| med. | protozoal bacteria | bacteria protozoárica |
| med., life.sc. | pseudomonas bacteria | bacterias seudomonas |
| food.ind. | psychrophilic bacterium | bacteria psicrofilica |
| nat.sc. | psychrophilic bacterium | bacteria psicrófila |
| environ. | putrefactive bacteria | bacteria putrefactiva |
| nat.sc. | putrefactive bacteria | bacteria putrificante |
| chem. | recipient bacterium | bacteria recipiente |
| microbiol. | rod-like bacterium | bacteria en forma de bastón |
| microbiol. | rod-shaped bacterium | bacteria en forma de bastón |
| health. | soil bacteria | bacterias del suelo |
| environ. | soil bacteria | bacteria del suelo orgánico |
| bacteriol. | sporeforming bacterium | bacteria que produce esporas |
| med. | sulfate-reducing bacteria | bacterias reductoras de los sulfatos |
| med. | sulfur bacteria | bacterias sulfurosas |
| nat.sc. | sulfur bacterium | bacteria sulfurosa |
| environ. | sulphur bacteria | bacteria del azufre |
| nat.sc. | sulphur bacteria | bacteria sulfurosa |
| med. | test for gene mutations in bacteria | ensayo de mutaciones génicas en las bacterias |
| nat.sc. | thermophilic bacterium | bacteria termófila |
| life.sc. | viable bacterium | bacteria variable |
| agric. | vinegar bacteria | fermentos acéticos para la fabricación del vinagre |
| agric. | vinegar bacteria | mycoderma aceti (Mycoderma aceti) |
| life.sc., agric. | vinegar bacteria"Acetobacter" | "acetobacter" |
| med. | virulent bacteria | bacterias virulentas |