R & D
abbreviation (1)Definition of R & D
(Entry 1 of 4)
research and development
Definition of rd (Entry 2 of 4)
1 road
2 rod
3 round
Definition of RD (Entry 3 of 4)
1 registered dietitian
2 rural delivery
-rd
symbolDefinition of -rd (Entry 4 of 4)
—used after the figure 3 to indicate the ordinal number third3rd83rd
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