| Gluck of operatic fame |
| Puccini opera |
| Opera-box wear |
| Multination cooperation |
| Operatic goddess |
| Opera staple |
| According to George Bernard Shaw it is "the anesthesia by which we endure the operation of life |
| Operatic soprano Gluck |
| Opera singer nicknamed "La Divina |
| Operator of the largest brewery facility in the world |
| Opera heroine |
| Opera text |
| 1887 Victorien Sardou play on which an opera is based |
| Opera song |
| Verdi opera set in Egypt |
| Opera diva Callas |
| Amateur radio operator |
| Hospital employee's role as an opera girl? |
| I hear you," to a CB operator |
| CIA operative |
| Math operations that yield remainders |
| Operatic passage |
| Amateur radio station operators |
| Stevens of operatic fame |
| Emergency exodus operation, briefly |
| Operatic solo for Plácido Domingo |
| Operator's number? |
| Operatic offering by Verdi |
| Amateur radio operators. |
| Adm. Zumwalt, chief of naval operations during the Vietnam War |