(historical) The period of Egyptian history from the end of the Third Intermediate Period to the conquest of Egypt by Alexander the Great (the 26th through 31st dynasties), characterized by alternating periods of native and Persian rule.

(historical) The period of Egyptian history from the end of the New Kingdom to the start of the Late Period, comprising the 21st through 25th dynasties and characterized by political fragmentation and periods of Libyan and Nubian rule over Egypt.

(historical) The period of Egyptian history from the end of the Middle Kingdom midway through the 13th dynasty to the start of the New Kingdom at the beginning of the 18th dynasty, characterized by political disintegration and later the conquest of Egypt by the Hyksos.

Synonym of time period

The length of time during which an activity occurs or a condition remains. It may be measured either in seconds or in millions of years, depending upon the nature of the activity of condition being considered.

(astronomy) A disturbance in the motion of a planet due to its position in its orbit relative to another planet.

plural of periodic inequality

Around the time of ablation

plural of periodic month

Synonym of tropical month