a. [f. L. lacte-us (see LACTEAL) + -OUS.]
1. Of the nature of milk; milky.
1646. [see LACTARY a.].
1666. J. Smith, Old Age (ed. 2), 174. There is a lacteous, and a caseous part therein.
1696. J. Edwards, Demonst. Existence God, II. 101. Others reckon it to be a lacteous excrement.
fig. 1870. Lowell, Among my Bks., Ser. I. (1873), 188. Professors who were forever assiduously browsing in vales of Enna slowly secreting lacteous facts.
2. Resembling milk; of the color of milk. † Lacteous circle: the Milky Way. † Lacteous star: one belonging to the Milky Way.
1646. Sir T. Browne, Pseud. Ep., IV. xii. 211. Though we leave out the Lacteous circle yet [etc.].
1669. W. Simpson, Hydrol. Chym., 278. The lacteous cremor or milky juyce.
1677. Plot, Oxfordsh., 48. Two small and very weak springs, of a lacteous colour but no such tast.
1682. Sir T. Browne, Chr. Mor., III. § 24. Numerous numbers must be content to stand like lacteous or nebulous Stars.
1826. Kirby & Sp., Entomol., IV. 278. Lacteous (lacteus), white with a slight tint of blue.
† 3. = LACTEAL a. 2. Obs.
1692. Bentley, Boyle Lect., iii. 8. The Lungs are suitable for Respiration, the Lacteous Vessels for the Reception of the Chyle.
Hence Lacteously adv., in a lacteous manner (Webster, 1864).