To correct this, these lenses use extra pieces of glass, adding weight and mass.

But they'd finish adding volatiles and mass to Moon One before they went cold.

Thus, a photon with no mass may add mass to a system in which it is trapped.

"The only way we can compete is to add scale and mass," he said.

Hot food, hot drinks-they warmed a moment, then added dead, cold mass to the chill within her.

"Strategically, Giant adds critical mass and highly developed food retailing expertise."

May add mass to each leg, and consequently slightly hinder speed.

Protein or amino-acid drinks can add mass to the body.

Somehow- even I did not know how-they had added so much mass to the universe that it was slowing its rate of expansion.

Perhaps, she thought, they were also adding mass at the center-if there is one.