This is the 9310th most frequent Turkish word.
yaşamı
"Yaşamı" means "his/her/its life" in English.
In this sentence, 'yaşamı' is used to imply 'his/her life,' functioning as a noun with a possessive suffix and in the accusative case.
Onun yaşamı boyunca birçok insanla tanıştı.
Throughout his/her life, he/she met many people.
Here, 'yaşamı' denotes 'his/her life' as a possessed object of the sentence's description.
Yaşamı sevinç ve üzüntü doluydu.
His/Her life was full of joy and sorrow.
In this example, 'yaşamı' is part of a structure emphasizing personal responsibility, again used as a noun with a possessive suffix.