invisible

adj

1. (not-comparable)Unable to be seen; out of sight; not visible.

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

   “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.”

   “An interesting feature of the church is the invisible clock, which you can hear thumping away as you enter. Constructed in 1525, it is one of the oldest timepieces in England. It chimes the hours and the quarters, and every three hours it plays a hymn. But it has no faces.”

   “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.”

   “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.”

2. (not-comparable)Not appearing on the surface.

   “The physical covering of this image limited the Christians’ view, rendering the image invisible on all but a few occasions.”

3. (Internet, not-comparable)Apparently, but not actually, offline.

   “I went invisible so that my ex-girlfriend wouldn't send me instant messages.”

4. (not-comparable)That is ignored by a person.

verb

1. To make invisible, to invisiblize.

   “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.”

noun

1. (obsolete)An invisible person or thing; specifically, God, the Supreme Being.
2. (obsolete)A Rosicrucian; so called because avoiding declaration of his craft.
3. (obsolete)One of those (as in the 16th century) who denied the visibility of the church.

   “Invisibles. Heretics who denied the visibility of the Church”