What does OR stand for?

The list of OR abbreviation meanings.

Stands For|554Abbreviated As|0Related|0
15
Olfactory receptor
15
Opioid Receptor
14
Opioid Receptors
14
Operations Readiness
14
Oxide Removal
13
Olfactory Receptors
13
Ovulation rate
13
Oxygen Reduced
13
Orientation Relationship
12
Oestrogen Receptor
12
Operation Requirement
12
Optical Recorder
12
Object Reuse
12
Own Recognizance
10
Onward Routing(Technology)
9
Operating Room(Nursing, Veterinary, Architectural)
9
Oocyte Retrieval
9
Oregon(US States, STATES, STATE)
8
Odorant Receptor
8
Offset ratio
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APASmart Define. (2018). or. Retrieved September 22, 2026, from http://smartdefine.org/or/abbreviations/f
ChicagoSmart Define. 2018. "or" http://smartdefine.org/or/abbreviations/f (accessed September 22, 2026).
HarvardSmart Define 2018, or, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/or/abbreviations/f>.
MLASmart Define. "or" 16 February 2018. Web. 22 September 2026. <http://smartdefine.org/or/abbreviations/f>