Tyndall beam: Meaning and Definition of

Tyn'dall beam"

Pronunciation: [key]
— Physical Chem. Physical Chem.
  1. the visible path of light produced by the scattering actionof the particles in a colloidal solution on a beam of light passed through it.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.