periodicKK [ˌpɪriˈɑdɪk] ｜ /ˌpɪriˈɑdɪk/
GEPT 中高級
C1adjective
happening at regular intervals
The professor assigned periodic quizzes throughout the semester to ensure students were keeping up with the material.
定期的；周期性的
C2adjective
recurring from time to time
The company conducts periodic performance reviews to assess employee productivity and provide feedback.
不定期出現的；間歇的
C2adjective
relating to or denoting the periodic table of elements
In chemistry class, the teacher explained the periodic table and how elements are arranged in a periodic manner based on their atomic number.