apian /ˈeɪpi.ən/adjective 1noun 1forms 3 adjective1 •Relating to bees.In fact, apian, formican, vespal, and termital government is not a monarchy, but a pure democracy. The queens of ants, bees, wasps, and termites wear the crown of maternity — no other. — 1904 noun1 •(rare) A bee.The largest of all the apians is the humble-bee, or humming-bee (Bombus). — 1858 formsapians · more apian · most apian