| ESD | electronic summation device; electrostatic discharge; emission spectrometric device; end-systolic di... |
|---|---|
| S | Greek capital letter sigma; syphilis; summation of series |
| Sp | the most posterior point on the posterior contour of the sella turcica; species; specific; specimen;... |
| Isa | spatial average intensity [pulse] |
| Isapa | spatial average pulse average |