Invisible \In*vis"i*ble\, a. [F. invisible, L. invisibilis. See In- not, and Visible.]

Incapable of being seen; not perceptible by vision; not visible.

To us invisible, or dimly seen In these thy lowest works. --Milton.

Invisible bird (Zo["o]l.), a small, shy singing bird (Myadestes sibilons), of St. Vincent Islands.

Invisible green, a very dark shade of green, approaching to black, and liable to be mistaken for it.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Invisible \In*vis"i*ble\, n.

1. An invisible person or thing; specifically, God, the Supreme Being.

2. A Rosicrucian; -- so called because avoiding declaration of his craft. [Obs.]

3. (Eccl. Hist.) One of those (as in the 16th century) who denied the visibility of the church. --Shipley.

Source: Webster's Revised Unabridged Dictionary (1913)