used as combining form of L. lact-, lac milk: as in Lactobutyrometer, an instrument for estimating the amount of butter in a given quantity of milk. Lactocele = GALACTOCELE. Lacto-phosphate, a salt of lactic and phosphoric acids in combination. Lacto-protein, a normal albuminous constituent of milk. Lactoscope [see -SCOPE], an instrument for ascertaining the purity of milk from the amount of resistance it offers to the passage of light. Lacto-thermometer, an instrument for ascertaining the temperature of milk.
1884. Health Exhib. Catal., 25/1. Graduated Cream Glasses, *Lactobutyrometer.
1855. Mayne, Expos. Lex., *Lactocele.
1878. A. M. Hamilton, Nerv. Dis., 335. The syrup of the *lacto-phosphate of lime.
1864. Reader, No. 86. 239/2. A new albuminoidal substance found in milk … *lacto-proteine.
1858. Simmonds, Dict. Trade, *Lactoscope,… an instrument invented by M. Donne, of Paris, for ascertaining the opacity of milk, and thus estimating the richness of the fluid in cream.
1884. Health Exhib. Catal., 25/1. Milk Thermometers … *Lacto-Thermometer.
