Meanings

regular service

late Heian period

synchronisation loss (in digital communications)

period of transition (e.g. from old to new system)

summer vacation

marriageable age

formative period (e.g. of nation)

coldest period

the last half-year

test (testing) period

rotation period

period of time in which to recharge one's batteries

growth period

length of one's stay

early detection (esp. of an illness)

decisive battle of brief duration

midyear examinations

periodic medical check-up (examination)

regular (annual) pay raise

alluvial period