A rare form of chromosomal rearrangement where the participating chromosomes break at their centromeres and the long arms fuse to form a single, large chromosome with a single centromere.

One of 120 counties in Kentucky, United States. County seat: Mount Olivet. Named after George Robertson.

(graph theory) A theorem stating that the undirected graphs, partially ordered by the graph-minor relationship, form a well-quasi-ordering.

(medicine) Pupils which narrow to track an object as it approaches the face, but which will not narrow in reaction to increased light ("accommodating, but not reactive"); a symptom of the neurosyphilis stage syphilis infection.

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

Alternative form of Robertian

plural of Robertine

Any member of the Frankish predecessor family of origin to the ruling houses of France.

plural of Robertian

plural of Hill-Robertson effect