We found 18 dictionaries that define the word ultrastructure:

General (11 matching dictionaries)

1. ultrastructure: Merriam-Webster
2. ultrastructure: Oxford Learner's Dictionaries
3. ultrastructure: American Heritage Dictionary of the English Language
4. ultrastructure: Collins English Dictionary
5. ultrastructure: Wordnik
6. ultrastructure: Wiktionary
7. ultrastructure: Webster's New World College Dictionary, 4th Ed.
8. ultrastructure: Infoplease Dictionary
9. ultrastructure: Dictionary.com
10. Ultrastructure: Wikipedia, the Free Encyclopedia
11. ultrastructure: TheFreeDictionary.com

Computing (1 matching dictionary)

12. ultrastructure: Encyclopedia

Medicine (4 matching dictionaries)

13. ultrastructure: Merriam-Webster Medical Dictionary
14. Dorland's Illustrated Medical Dictionary (No longer online)
15. online medical dictionary (No longer online)
16. ultrastructure: Medical dictionary

Science (2 matching dictionaries)

17. Agricultural Thesaurus and Glossary (No longer online)
18. ultrastructure: Natural History Terms

(Note: See ultrastructural as well.)

Definitions from Wiktionary (ultrastructure) ▸ noun:  (biology) The fine, detailed structure of a biological specimen that can only be observed by electron microscopy Similar: ultramicrostructure, microstructure, macrostructure, microarchitecture, supermicroscopy, electron microscopy, ultrabiomicroscopy, electron cryomicroscopy, ultramicrotome, micromorphology, more... Opposite: macrostructure, gross structure, overall structure Types: chromatin, cytoskeleton, nucleolus, cell wall, cell membrane, ribosomes, more... Adjectives: comparative, cellular, normal, hepatic, myocardial, renal, biological, mitochondrial, characteristic, glomerular, synaptic ▸ Words similar to ultrastructure ▸ Usage examples for ultrastructure ▸ Idioms related to ultrastructure ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ultrastructure ▸ Words that often appear near ultrastructure ▸ Rhymes of ultrastructure ▸ Invented words related to ultrastructure