阴木兔年 (female Wood-Rabbit) 242 or −139 or −911 — to — 阳火龙年 (male Fire-Dragon) 243 or −138 or −910
Year 116 (CXVI) was a leap year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Lamia and Vetus (or, less frequently, year 869 Ab urbe condita). The denomination 116 for this year has been used since the early medieval period, when the Anno Dominicalendar era became the prevalent method in Europe for naming years.
Trajan makes Syria a province of Rome and crosses the Tigris to annex Adiabene. He proceeds with his army to the Persian Gulf and conquers territory that becomes the province of Parthia.
Trajan removes Osroes I as king of Parthia, and appoints his son Parthamaspates in his place. Parthamaspates romanizes his name to Parthicus.
In summer, rebellious movement emerges in Mesopotamia against Roman occupation. General Lusius Quietus is sent by Trajan to suppress the uprisings, recovering Nisibis, besieging and sacking Edessa, and waging war against local Jews
Trajan sends laureatae to the Roman Senate on account of his victories and being conqueror of Parthia.