We found 5 dictionaries that define the word frontal sinuses:

General (2 matching dictionaries)

1. frontal sinuses: Vocabulary.com
2. frontal sinuses: Wiktionary

Computing (1 matching dictionary)

3. Frontal sinuses: Encyclopedia

Medicine (2 matching dictionaries)

4. frontal sinuses: Merriam-Webster Medical Dictionary
5. Frontal sinuses: Medical dictionary

Phrases: frontal air sinuses, more... ▸ Words similar to frontal sinuses ▸ Usage examples for frontal sinuses ▸ Idioms related to frontal sinuses ▸ Wikipedia articles (New!) ▸ Words that often appear near frontal sinuses ▸ Rhymes of frontal sinuses ▸ Invented words related to frontal sinuses