We found 4 dictionaries that define the word arachnoid membranes:

General (2 matching dictionaries)

1. arachnoid membranes: Vocabulary.com
2. arachnoid membranes: TheFreeDictionary.com

Computing (1 matching dictionary)

3. arachnoid membranes: Encyclopedia

Medicine (1 matching dictionary)

4. arachnoid membranes: Medical dictionary

(Note: See arachnoid_membrane as well.)

Definitions from WordNet (arachnoid membrane) ▸ noun:  the middle of the 3 meninges ▸ Also see arachnoid_membrane ▸ Words similar to arachnoid membranes ▸ Usage examples for arachnoid membranes ▸ Idioms related to arachnoid membranes ▸ Wikipedia articles (New!) ▸ Words that often appear near arachnoid membranes ▸ Rhymes of arachnoid membranes ▸ Invented words related to arachnoid membranes