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• a  relating to bees or beekeeping

• For instance, he has clearly established that his bacteria -- while related to Bacillus sphaericus, a living resident of apiarian digestive tracts -- are genetically distinct from .
• Its keeper, a white-bearded octogenarian named Ernest Baudu, lectures any stray stroller who will listen on the facts of life, both apiarian and human.
• Near the narrowest part of southern Mexico, where the rugged Sierra Madre sweeps close to the coast, they have prepared a stand against the marauders, a kind of apiarian Thermopylae.