| REFRACTOR | Telescope that uses a lens as the primary focusing element |
| ECHO | See echelons, without a lens, as a sound copy (4) |
| MICROSCOPES | Optical instruments that use a lens to produce magnified images of small objects (11) |
| POV | Lens, as it were: Abbr. |
| MRBIG | Chris Noth's role as the primary love interest of Carrie Bradshaw in the hit series Sex And The City |
| FOCUSON | Treat as the primary issue |
| FINDER | One who discovers, looks through a lens or spots a needle in a haystack; a small telescope that locates stars for a larger one; or, a photographer's view-seeker or lensman's sight (6) |
| HUBBLE | NASA Telescope that has made some 1.3 million observations including MACS J1149 Lensed Star 1 (or Icarus), a star some 9 billion light-years from Earth (6) |
| BEDROCK | Fictional town that is the primary setting of the television show The Flintstones (7) |
| SHERMAN | Name given to the Medium Tank M4, the primary tank produced by the US for use by the Allies during World War II (7) |
| ABYSM | I read that a very deep chasm has appeared by the primary school in the middle of Okehampton (5) |
| REDGROUSE | Heather-eating plump moorfowl that is the primary target of sporting guns during the British countryside ritual of the "Glorious Twelfth" (3,6) |
| RADICLE | In botany, the part of a plant embryo that develops into the primary root (7) |
| STOMODEEUM | What is the part of the primary oral cavity which begins as an invagination of the ectoderm? (10) |
| MARS | The Red Planet that is the primary focus of the upcoming Starship flight missions. (4) |
| FOURSOMES | The Beatles, The Golden Girls, Our Matriarchs, the TMNT, and the primary cast of Seinfeld |
| TAPROOT | The primary organ of a plant which lies beneath the surface (7) |
| TALMUD | The primary source of Jewish religious law, consisting of the Mishnah and the Gemara |
| BESTMAN | The primary attendant to a bridegroom at a wedding (4,3) |
| HEATHER | Also called ling and related to blueberries and rhododendrons, the primary food of the red grouse and one of the national flowers of Scotland (7) |
