van' der Waals'" equa'tion
Pronunciation: (van' dur wälz", wôlz"; Du. vän" dur väls'), [key] Thermodynamics.
an equation of state relating the pressure, volume, and absolute temperature of a gas, taking into account the finite size of the molecules and the attractive force between them. Also,van' der Waals" equa'tion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.