I. abbreviation or noun
( -s )
Etymology: New Latin scientiae doctor
a doctor of science
II. abbreviation
1. same day
2. sash door
3. saturation deficit
4. sea damage
5. semidiameter
6. senior deacon
7. service dress
8. several dates
9. short delay
10. short delivery
11. sight draft
12. often not capitalized
[Latin sine dato ]
without date
13. often not capitalized
[Latin sine die ]
without day
14. single deck
15. soft drawn
16. solid drawn
17. special delivery
18. special duty
19. specially denatured
20. stage direction
21. standard deviation
22. straight duty
23. supply department; supply depot
24. survival dose