convection

The bag may be called a "convection shield," slowing convection-cooling due to air currents.

This mode of propagation may better be described as a convection of excitation.

This is illustrated by the seasonal variation in convection.

In summer, when the gradient is steepest, convection reaches its maximum.

In the part BNA, the electricity is carried by a moving conductor; it is said to be displaced by convection.