external fixation n.
The fixation of a fractured bone by a splint or plastic dressing.
- Extended memory specification
storage (XMS) The specification describing the use of IBM PC extended memory in real mode for storing data (but not executable code). Memory is made available by extended memory manager (XMM) software. The XMM functions are accessible through interrupt 2FH. (1996-01-10)
- Extended memory manager
software, storage (XMM) The memory manager software implementing Extended Memory Specification, such as HIMEM or QEMM386. XMM’s can usually also act as A20 handlers. (1996-01-10)
- Extended memory
storage Memory above the first megabyte of address space in an IBM PC with an 80286 or later processor. Extended memory is not directly available in real mode, only through EMS, UMB, XMS, or HMA; only applications executing in protected mode can use extended memory directly. In this case, the extended memory is provided by […]
- External intercostal muscle
external intercostal muscle n. Any of the muscles with their origin from the lower border of a rib, with insertion into the upper border of the rib below, with nerve supply from the intercostal nerve, and that contract during inspiration and maintain tension in the intercostal spaces to resist mediolateral movement.