This is the 14988th most frequent Russian word.
подрастет
"Подрастет" means "will grow up a bit" or "will grow slightly."
Here, 'подрастет' is used in the future tense to indicate the gradual growth in size or maturity of the child.
Когда ребенок немного подрастет, он сможет кататься на велосипеде.
When the child grows a bit older, he will be able to ride a bicycle.
In this context, 'подрастет' refers to the gradual growth of plants or crops towards maturation.
Подрастет урожай, и мы соберем спелые плоды.
The crop will grow, and we will harvest ripe fruits.
Here 'подрастет' is employed to imply physical growth and increased strength of the puppy over time.