Your cells absorb glucose and convert it into energy to drive the cell.
You feel tired because your cells cannot absorb glucose, leaving them with nothing to burn for energy.
Superman's cells absorb electromagnetic radiation from stars (like Earth's sun).
Insulin stimulates cells to absorb enough glucose from the blood for the energy, or fuel, that they need.
This is why animals have circulatory systems - otherwise, our cells would absorb water and salt until they swelled.
These cells can also absorb water, further aiding in hydration.
Its cells absorb oxygen from the tear film.
These important cells absorb excess light so that the photoreceptors can give a clearer signal.
When exposed to the water, these cells absorb it like a sponge and swell.
Without insulin, cells cannot absorb sugar (glucose), which they need to produce energy.