1. to satisfy (conditions, one's appetite, etc.); to meet (e.g. demands); to fulfill; to gratify
扉を開ける前から心が満たされる。My heart is filled even before I open the door.
2. to fill (e.g. a cup); to pack; to supply
光の小爆発が起こり、一瞬、視界が光に満たされる。A small explosion of light occurs, and for an instant, the field of vision is filled with light.