Definition of "inconspicuity"

Where, by the way, I offer, whether galls (ſuppoſing all aſtringents work by twiſting and curling, as before I ſhewed) do not twiſt the aculeate particles of diſſolved copperas, making of themſelves no colour, into numerous cones, and thereby produce a black colour; the propriety of cones, and pyramids, and other acuminate bodies, being to return none of the light they receive, which is the ſame, as to cauſe inconſpicuity or blackneſs.

1756, Thomas Birch, compiler, The History of the Royal Society of London for Improving of Natural Knowledge, from Its First Rise. In Which the Most Considerable of Those Papers Communicated to the Society, Which Have Hitherto Not Been Published, Are Inserted […], volume I, London: […] A[ndrew] Millar […], page 65

The cataract of the anterior capſula. […] It is known by viewing the pupil; behind which, after the cataract is depreſſed, the anterior lamina of the capſula remains obſcured; likewiſe by the opaque appearance behind the pupil, and inconſpicuity of the couching inſtrument behind the pupil.

1793, William Rowley, The Rational Practice of Physic of William Rowley, M.D. […], volume III, London: […] [F]or the Author; sold by E. Newbery, […]; J. Hand, […], page 290

Slipping the rope from the jenny, he handed her off to his fellow in blackguardly deals, and with remarkable inconspicuity put on the halter and dug in his heels.

2017, Jan D. Hodge, The Bard & Scheherazade Keep Company, San Jose, Calif.: Able Muse Press, page 55