閉子集

closed subset (math.)

to close / to stop up / to shut / to obstruct

son / child / seed / egg / small thing / 1st earthly branch: 11 p.m.-1 a.m., midnight, 11th solar month (7th December to 5th January), year of the Rat / Viscount, fourth of five orders of nobility 五等爵位[wu3 deng3 jue2 wei4] / ancient Chinese compass point: 0° (north) / subsidiary / subordinate / sub-

(noun suffix)

subset

to gather / to collect / collected works / classifier for sections of a TV series etc: episode