We found 19 dictionaries that define the word microbial:

General (14 matching dictionaries)

1. microbial: Merriam-Webster
2. microbial: Oxford Learner's Dictionaries
3. microbial: Collins English Dictionary
4. microbial: Vocabulary.com
5. Microbial, microbial: Wordnik
6. microbial: Wiktionary
7. microbial: Dictionary.com
8. Microbial: Wikipedia, the Free Encyclopedia
9. microbial: Rhymezone
10. microbial: FreeDictionary.org
11. microbial: Mnemonic Dictionary
12. microbial: TheFreeDictionary.com

Computing (1 matching dictionary)

13. microbial: Encyclopedia

Medicine (3 matching dictionaries)

14. microbial: Merriam-Webster Medical Dictionary
15. online medical dictionary (No longer online)
16. microbial: Medical dictionary

Science (1 matching dictionary)

17. Biological Control (No longer online)

(Note: See microbe as well.)

Definitions from Wiktionary (microbial) ▸ adjective:  Of, relating to, or caused by microbes or microorganisms. ▸ adjective:  Small; tiny; minuscule. ▸ noun:  A microbe or bacterium. Similar: microbian, microbal, microbiological, microbacterial, bacterial, microorganic, micrococcal, microorganismal, microfloral, microecological, more... Types: bacteria, fungi, protozoa, algae, virus, rickettsia, spirochete, more... Phrases: microbial ecology, microbial flora, microbial mats, Microbial genetics, microbial load, more... Adjectives: invertebrate, anti, geo, antarctic, scale, complex Colors:     slime green,     algae green, more... ▸ Words similar to microbial ▸ Usage examples for microbial ▸ Idioms related to microbial ▸ Wikipedia articles (New!) ▸ Popular adjectives describing microbial ▸ Popular nouns described by microbial ▸ Words that often appear near microbial ▸ Rhymes of microbial ▸ Invented words related to microbial