To this end I have not hesitated to introduce apparently trivial matter, where it has seemed characteristic, nor to quote opinions or descriptions which, though genuine, were mistaken.

Somehow, the First Federation had introduced degenerate matter into the asteroid's crust, making it completely impenetrable to sensors.

But conference committees sometimes do introduce new matter.

Additionally, high rates of primary production can introduce dissolved organic matter (DOM) to the waters.

"Erring youth," replied the Logical Crab, "you are introducing new and irrelevant matter."

To counteract the unstable nature, and prevent the distortions from collapsing under their own 'weight', one would need to introduce hypothetical exotic matter or negative energy.

Weeds with strong, widespread roots also introduce organic matter to the earth in the form of those roots, turning hard, dense clay dirt into richer, more fertile soil.

Any attempt to introduce matter and antimatter causes them to shatter.

The statement does not discourage controversy but emphasizes professionalism, believing that professors should be careful "not to introduce into their teaching controversial matter which has no relation to their subject."

He wrote in the German dialect of Konstanz an exact and careful account of all, introducing much statistical matter.