Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine
1. Securely placed or fastened; settled; established; company; imovable; unalterable.
2. Stable; non-volatile.
Fixed air, the fixedpoint about which any line of troops wheels.
Fixed stars, such stars as always retain almost the sameapparent position and distance with respect to every another, thus distinguished from planets and comets.
Source: Websters Vocabulary