| CRATERED | Having a surface like that of the Moon (8) |
| INLAID | Set into a surface, like designs on a parquet floor |
| KLEINBOTTLE | In topology, a surface like a Möbius strip, but with no boundary |
| ADSORBS | Gathers on a surface, like water in droplets on cold glass |
| BEVEL | _ gears: gears having a surface slant? |
| CONCAVE | Having a surface which curves inwards (7) |
| ADSORBING | Having a surface film (9) |
| EGGSHELL | Very thin type of porcelain like that of the fragile covering of the objects studied in oology (8) |
| INSTINCT | "There is no ___ like that of the heart": Lord Byron (8) |
| STELLATE | Arranged in a radiating pattern like that of a star (8) |
| JEREMIAD | List of woes, like that of a Hebrew prophet (8) |
| RUFOUS | From the Latin for "red", a ruddy-brown, rust or tawny colour, like that of the coat of a red fox/squirrel (6) |
| ERRANTRY | Conduct like that of a knight-errant |
| COLOSSUS | Gigantic statue, like that of Rhodes (8) |
| HIVEMIND | Collective intelligence, like that of ants or internet users |
| RHIZOME | Underground horizontal stem, also known as rootstock, like that of the bearded iris |
| RAY | Light beam like that of the sun |
| DELTA | River mouth, like that of the Nile (5) |
| ANSA | Handle (like that of the drunken Silenus's tankard, Ecl. 6.17) |
| HUMMING | Making continuous sound like that of the bee (7) |
