Definition of "invisible"

Unſpeakable, who ſitſt above theſe Heavens / To us inviſible or dimly ſeen / In theſe thy loweſt works, […]

1667, John Milton, “Book V”, in Paradise Lost. […], London: […] [Samuel Simmons], […]; republished as Paradise Lost in Ten Books: […], London: Basil Montagu Pickering […], 1873,

The Celebrity, by arts unknown, induced Mrs. Judge Short and two other ladies to call at Mohair on a certain afternoon when Mr. Cooke was trying a trotter on the track. […] Their example was followed by others at a time when the master of Mohair was superintending in person the docking of some two-year-olds, and equally invisible.

1897 December (indicated as 1898), Winston Churchill, chapter IV, in The Celebrity: An Episode, New York, N.Y.: The Macmillan Company; London: Macmillan & Co., Ltd., pages 58–59

Earless ghost swift moths become “invisible” to echolocating bats by forming mating clusters close (less than half a meter) above vegetation and effectively blending into the clutter of echoes that the bat receives from the leaves and stems around them.

2013 May-June, William E. Conner, “An Acoustic Arms Race”, in American Scientist, volume 101, number 3, pages 206–7

The teeth on an invisible zip are different from those on a conventional zip, as they are turned onto the inside so that they do not show, giving the impression of being concealed in the seam, as seen below.

2013, Jayne Smith, Guide to Basic Garment Assembly for the Fashion Industry, page 60

Soon after departure, we cross the invisible border into Scotland to enjoy more stunning coastal scenery, before the line finally swings inland at Burnmouth to traverse pine-clad valleys, shadowed by the A1 trunk road until we rejoin the coast at Cove, east of Dunbar.

2022 November 30, Paul Bigland, “Destination Oban: a Sunday in Scotland”, in RAIL, number 971, page 75

In the next section I look at some of the factors that contribute to the “invisibling” of people in later life in terms of the marginalization and splitting that occurs in providing decent psychological as well as physical care.

2007, Rachael Davenhill, Looking into Later Life

Invisibles. Heretics who denied the visibility of the Church

1872, Orby Shipley, A Glossary of Ecclesiastical Terms