grow up
fledge
to age
Tire
Expand Grow
καλιεργώ / kaliergo μεγαλώνω / megalono means "grow up"
Dawn.
Better; expand; grow.
A one-syllable word meaning to get bigger is "grow".
"Heliotropic" means to move or grow in the direction of the sun (such as the plant called Heliotrope), which may or may not be what you were looking for.
germinate
Dawn