eternity; permanence; perpetuity; Eikyū era (1113.7.13-1118.4.3)
durability; persistence; stamina; endurance; staying power
eternal; everlasting; perpetual; immemorial
protracted war; war of attrition
perpetual motion machine; perpetual motion engine; perpetuum mobile
permanent; perpetual; lasting
Bunkyū era (1861.2.19-1864.2.20)
marathon training in physical education classes in Japanese schools
permanent preservation; permanent repository; keeping something permanently; preservation in perpetuity
permanence; perpetuity; Chōkyū era (1040.11.10-1044.11.24)
marrying to become a housewife; (lit.) permanent employment (once one becomes a housewife)
permanence; forever unchanging
everlasting fortune in battle; continued luck in war
to apologize for a long neglect of friends (apologise)
Jōkyū era (1219.4.12-1222.4.13); Shōkyū era
endurance race (motorsport)
Kenkyū era (1190.4.11-1199.4.27)
not having met or contacted someone for a long time; neglect of friends
version for permanent preservation; version worth preserving forever; (must-have) collector's edition
Jōkyū War (1221); Jōkyū Disturbance; Jōkyū Rebellion
Kyūan era (1145.7.22-1151.1.26)
Genkyū era (1204.2.20-1206.4.27)
removing hair permanently
Kyūju era (1154.10.28-1156.4.27)
permanent suspension; permanent ban
removal of dissolute sons from the family register (Edo period)
extending over a long time
permanent storage (radioactives, data, etc.)
dogged perseverance; untiring patience
permanent establishment (in tax law)
Enkyū era (1069.4.13-1074.8.23)
Empress's Birthday (esp. as celebrated prior to WWII)
greenish gray; greenish grey
permanent voter registration list
coeval with heaven and earth
heaven and earth are eternal
permanent magnet synchronous motor; PMSM; brushless electric motor
Jōkyū War (1221); Jōkyū Disturbance; Jōkyū Rebellion
permanent magnet generator
permanent disqualification; lifetime disqualification
permanent strain; permanent set; permanent deformation
permanent establishment (in tax law)
to apologize for a long neglect of friends (apologise)