| Answer | Crossword Clue |
|---|---|
| OAR | Essential element of a regatta. |
| ZIPCODE | Essential element of dot-com transactions |
| ZINC | Essential element |
| PARTANDPARCEL | Essential element |
| BEALL | Essential element |
| PART | Essential element. |
| SAP | Essential element. |
| SOUL | Essential element |
| SINEQUANON | Essential element |
| PITH | Essential element |
| PARTANDPARCEL | An essential element |
| SINE | ... qua non (essential element) |
