Origin of lactometer

First recorded in 1810–20; lacto- + -meter Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for lactometer

Historical Examples of lactometer

  • The lactometer is used for measuring the purity and richness of milk.


    Elmer W. Cavins

  • A hydrometer that is especially adapted to milk is called a lactometer.

    The Book of Cheese

    Charles Thom and Walter Warner Fisk

  • The reading should be taken when the lactometer is floating free in the milk.

    The Book of Cheese

    Charles Thom and Walter Warner Fisk

  • The lactometer and cream-gauges showed that the poorest milk came from the poorest-kept cows.

    Hints on cheese-making

    Thomas Day Curtis

  • Feeling sure that the lactometer must be at fault, I consulted my friend the doctor, who examined and found it quite correct.

British Dictionary definitions for lactometer


  1. a hydrometer used to measure the relative density of milk and thus determine its qualityAlso called: galactometer
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012