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Related to lambda point: triple point
lambda point[′lam·də ‚pȯint]
The temperature (2.1780 K), at atmospheric pressure, at which the transformation between the liquids helium I and helium II takes place; a special case of the thermodynamics definition.
A temperature at which the specific heat of a substance has a sharply peaked maximum, observed in many second-order transitions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.