We found 7 dictionaries that define the word trephinations:

General (4 matching dictionaries)

1. trephinations: Merriam-Webster
2. trephinations: Collins English Dictionary
3. trephinations: Wiktionary
4. trephinations: TheFreeDictionary.com

Medicine (2 matching dictionaries)

5. trephinations: Merriam-Webster Medical Dictionary
6. trephinations: Medical dictionary

Science (1 matching dictionary)

7. Anthropology dictionary (No longer online)

(Note: See trephination as well.)

Definitions from Wiktionary (trephination) ▸ noun:  the surgical procedure in which a hole is drilled in the skull and a circular piece of bone removed ▸ Also see trephination ▸ Words similar to trephinations ▸ Usage examples for trephinations ▸ Idioms related to trephinations ▸ Wikipedia articles (New!) ▸ Popular adjectives describing trephinations ▸ Words that often appear near trephinations ▸ Rhymes of trephinations ▸ Invented words related to trephinations