We found 16 dictionaries that define the word helicoidal:

General (11 matching dictionaries)

1. helicoidal: Merriam-Webster
2. helicoidal: Oxford Learner's Dictionaries
3. helicoidal: Collins English Dictionary
4. helicoidal: Wordnik
5. helicoidal: Wiktionary
6. Helicoidal, helicoidal: Dictionary.com
7. Helicoidal: Online Plain Text English Dictionary
8. helicoidal: Webster's Revised Unabridged, 1913 Edition
9. Helicoidal: AllWords.com Multi-Lingual Dictionary
10. helicoidal: FreeDictionary.org
11. Helicoidal: TheFreeDictionary.com

Business (1 matching dictionary)

12. helicoidal: Legal dictionary

Computing (1 matching dictionary)

13. Helicoidal: Encyclopedia

Medicine (2 matching dictionaries)

14. helicoidal: Merriam-Webster Medical Dictionary
15. Helicoidal: Medical dictionary

Science (1 matching dictionary)

16. Bryological (No longer online)

Definitions from Wiktionary (helicoidal) ▸ adjective:  Synonym of helicoid Similar: helicoid, helictical, heliciform, bihelical, helical, hemihelical, helixlike, helispherical, superhelical, pseudohelical, more... Opposite: linear, straight, non-spiral Types: helical, spiral, coiled, twisted, more... ▸ Words similar to helicoidal ▸ Usage examples for helicoidal ▸ Idioms related to helicoidal ▸ Wikipedia articles (New!) ▸ Popular nouns described by helicoidal ▸ Words that often appear near helicoidal ▸ Rhymes of helicoidal ▸ Invented words related to helicoidal