| SAN | sinoatrial node; sinoauricular node; slept all night; solitary autonomous nodule |
|---|---|
| tin | three times a night [Lat. ter in nocte] |
| XN | night blindness |
| AFO | ankle/foot orthotic [brace or cast]; ankle-foot orthosis |
| CA | anterior commissure [Lat. commissura anterior]; calcium antagonist; California [rabbit]; cancer; Can... |