Как по Английски будет 周期

noun

A length or portion of time.

Примеры использования:

He had long periods of depression

adjective

Belonging to or characteristic of a past historical time, especially in style or design.

Примеры использования:

An attractive and beautifully modernized period house

noun

A series of events that are regularly repeated in the same order.

Примеры использования:

The recurrent cycle of harvest failure, food shortages, and price increases

verb

Ride a bicycle.

Примеры использования:

She cycled to work every day

noun

An iodide containing the highest possible proportion of iodine.

adjective

= perisomatic .