The satellite's periodic orbit allowed scientists to monitor the glacier's melting rate every three months.
卫星的周期轨道使科学家能够每三个月监测冰川的融化速率。
- Geysers, by contrast, have narrow underground channels that trap steam, causing pressure to build until it forces water upward in a periodic eruption.
From a Rhetorical Synthesis question · Expression of Ideas
Sequoia trees, among the largest living organisms on Earth by volume, survive periodic wildfires thanks to bark that can grow over a foot thick, insulating the tree's living tissue from the intense heat that would destroy most other species.
From a Central Ideas and Details question · Information and Ideas
Which choice best defines “periodic”?
A — Occurring at regular intervals. “periodic” means occurring at regular intervals.
Which word means “occurring at regular intervals”?
A — periodic. “periodic” means occurring at regular intervals.
periodic — occurring at regular intervals. In Chinese: 周期的.
periodic is pronounced /ˌpɪəriˈɒdɪk/.
The satellite's periodic orbit allowed scientists to monitor the glacier's melting rate every three months. (卫星的周期轨道使科学家能够每三个月监测冰川的融化速率。)
recurrent, regular, cyclic — all close in meaning to periodic (occurring at regular intervals).
constant, irregular — each the opposite of periodic (occurring at regular intervals).
Yes. periodic is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.