- enPR: drôn, IPA(key): /dɹɔːn/
- Rhymes: -ɔːn
- past participle of
2013 September-October, Henry Petroski, “The Evolution of Eyeglasses”, in American Scientist:
- The ability of a segment of a glass sphere to magnify whatever is placed before it was known around the year 1000, when the spherical segment was called a reading stone, […] . Scribes, illuminators, and scholars held such stones directly over manuscript pages as an aid in seeing what was being written, drawn, or read.
- Appearing agitated and unwell
appearing agitated and unwell, haggard