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What does OSR stand for?

OSR stands for Operational Sex Ratio (biology)

This definition appears frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

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We have 137 other meanings of OSR in our Acronym Attic

Samples in periodicals archive:

Male, Female, therefore, reads quite a bit differently from some of the more well-known works of evolutionary psychology which stress ultimate mechanisms, sometimes to the virtual exclusion of serious considerations of proximate mechanisms--including emotion and motivation, hormonal fluctuation, cultural differences, sex roles and ideology, and historical/demographic factors such as the operational sex ratio.