短颌的：下颌短于正常的- guarana
- guaranine
- guard
- Guarnieri's bodies (corpuscles)
- guayule
- gubernacula
- gubernacular
- gubernaculum
- Gubler-Robin typhus
- Gubler's hemiplegia,etc
- Gudden's commissure,law
- Guenz
- Guenzburg
- guidance
- guide
- guideline
- Guidi's canal
- Guillain-Barré syndrome
- Guillemin
- guillotine
- guinea pig
- Guinon's disease
- gullet
- Gull's disease
- Gullstrand Allvar