INVISIBIL'ITY INVIS'IBLE, adjective s as z. [Latin invisibilis; in and visibilis, viso, to see.] That cannot be seen; imperceptible by the sight. Millions of stars, invisible to the naked eye, may be seen by the telescope. He endured, as seeing him who is invisible. Hebrews 11:1.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI