Usually means: Anterior, initial segment of annelids.
Definitions Related words Mentions History
We found 16 dictionaries that define the word prostomium:

General (14 matching dictionaries)
  1. prostomium: Merriam-Webster
  2. prostomium: American Heritage Dictionary of the English Language
  3. prostomium: Collins English Dictionary
  4. prostomium: Wordnik
  5. prostomium: Wiktionary
  6. prostomium: Webster's New World College Dictionary, 4th Ed.
  7. prostomium: Infoplease Dictionary
  8. Prostomium, prostomium: Dictionary.com
  9. Prostomium: Wikipedia, the Free Encyclopedia
  10. Prostomium: Online Plain Text English Dictionary
  11. prostomium: Webster's Revised Unabridged, 1913 Edition
  12. Prostomium: AllWords.com Multi-Lingual Dictionary
  13. prostomium: FreeDictionary.org
  14. prostomium: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. prostomium: Encyclopedia

Medicine (1 matching dictionary)
  1. online medical dictionary (No longer online)

(Note: See prostomia as well.)

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Definitions from Wiktionary (prostomium)

▸ noun:  (zoology) The portion of the head of an annelid situated in front of the mouth.

Similar:
prostonium, metastomium, peristome, protostoma, epistome, epistoma, actinostome, procerite, hypostome, stoma, more...

Opposite:
opisthosome, pygidium

Types:
cephalic, aciculate, lobate, capitate, conic, fusiform, cylindrical, more...

▸ Words similar to prostomium

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▸ Rhymes of prostomium

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Similar:
prostonium, metastomium, peristome, protostoma, epistome, epistoma, actinostome, procerite, hypostome, stoma, more...

Opposite:
opisthosome, pygidium

Types:
cephalic, aciculate, lobate, capitate, conic, fusiform, cylindrical, more...



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