Addition reactions are important in organic chemistry.

Addition polymerizations are widely used in the production of plastics.

Addition polymerisations are widely used in the production of plastics.

The restaurant offers a variety of additional accompaniments for the main course.

The spike additions were carefully measured and added to the mixture.

The addition sign is used to indicate the operation of addition.

The math worksheet had several addition signs on it.

The Michael addition is a type of chemical reaction.

The Michael additions are important reactions in organic chemistry.

The referee added three minutes of additional time at the end of the game.