A particular coccidiostat.

Of or relating to William Rees Brebner Robertson (1881–1941), American zoologist and early cytogeneticist who first discovered the Robertsonian translocation.

plural of Robert Borden

plural of Sir Robert Borden

(Canada, slang) A Canadian hundred-dollar note.

Alternative form of Robert Borden

The phenomenon whereby genetic recombination allows evolution to progress more quickly.

(pathology) A bilateral small pupil of the eye that reduces in size when the patient focuses on a near object but does not constrict when exposed to bright light. It is a sign of neurosyphilis.

plural of Roberval balance

A kind of weighing scale with two identical horizontal beams attached, one directly above the other, to a vertical column.