延年 is read as えんねん (ennen) and means longevity.
えんねん
ennen
のびる
to spread (of paint, cream, etc.)
えんちょう
(total) length
えんき
postponement
えんめい
keeping alive longer
のべ
credit (buying)
えんえん
endlessly
えんしょう
spread of fire
えんちょうこうはん
second half of extra time (in soccer)
えんちょうぜんはん
first half of extra time (in soccer)
のべじんいん
total number of man-days
のべじかん
total man-hours
えんちょうせん
extended game