We found 35 dictionaries that define the word loess:

General (23 matching dictionaries)

1. loess: Merriam-Webster
2. loess: Oxford Learner's Dictionaries
3. loess: American Heritage Dictionary of the English Language
4. loess: Collins English Dictionary
5. loess: Vocabulary.com
6. Loess, loess: Wordnik
7. loess: Cambridge Advanced Learner's Dictionary
8. loess: Wiktionary
9. loess: Webster's New World College Dictionary, 4th Ed.
10. loess: The Wordsmyth English Dictionary-Thesaurus
11. loess: Infoplease Dictionary
12. loess: Dictionary.com
13. loess: Online Etymology Dictionary
14. LOESS, Loess: Wikipedia, the Free Encyclopedia
15. Loess: Online Plain Text English Dictionary
16. loess: Webster's Revised Unabridged, 1913 Edition
17. loess: Rhymezone
18. Loess: AllWords.com Multi-Lingual Dictionary
19. loess: Robb: German English
20. loess: FreeDictionary.org
21. loess: The Phrontistery - A Dictionary of Obscure Words
22. loess: Mnemonic Dictionary
23. loess: TheFreeDictionary.com

Business (1 matching dictionary)

24. loess: Merriam-Webster Legal Dictionary

Computing (1 matching dictionary)

25. loess: Encyclopedia

Medicine (1 matching dictionary)

26. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)

27. LOESS: Acronym Finder

Science (5 matching dictionaries)

28. Archaeology Wordsmith (No longer online)
29. Field Trip to Mars (No longer online)
30. Botanical Terms (No longer online)
31. Illustrated Glossary of Geologic Terms (No longer online)
32. loess: Natural History Terms

Slang (1 matching dictionary)

33. loess: Urban Dictionary

Tech (2 matching dictionaries)

34. loess: Canadian Soil Information System
35. Lake and Water Word Glossary (No longer online)

(Note: See loessial as well.)

Definitions from Wiktionary (loess) ▸ noun:  (geology) Any sediment, dominated by silt, of eolian (wind-blown) origin. Similar: aeolianite, loam, eolianite, lutite, silt, olistostrome, mudrock, eolith, pedosediment, sandbody, more... Opposite: eolian Types: yellow, red, brown, white, grey, green, more... Phrases: Loess Plateau, loess soil, loess sediments, Loess Bluffs National Wildlife Refuge, Loess Hills, more... Adjectives: peorian, chinese, typical, yellow, sandy, fertile, thick, older, calcareous, brown, deep Colors:     beige,     tan,     buff,     ochre,     sand, more... ▸ Word origin ▸ Words similar to loess ▸ Usage examples for loess ▸ Idioms related to loess ▸ Wikipedia articles (New!) ▸ Popular adjectives describing loess ▸ Words that often appear near loess ▸ Rhymes of loess ▸ Invented words related to loess