| 100% | SACS | 4 | Important structures in the defensive systems of octopi |
| 45% | OILRIGS | 7 | Structures in the Gulf of Mexico |
| 45% | DAM | 3 | Structure in the middle of a river |
| 42% | NUCLEUS | 7 | Dense central structure in the middle of an atom |
| 42% | LEADROLE | 8 | Important element in the formation of a star? |
| 42% | BEALE | 5 | Important street in the history of Memphis blues |
| 41% | ADAPTIONS | 9 | Alterations in the structure of an organism |
| 40% | CASSINI | 7 | Gap in the ring system of Saturn and also a probe |
| 39% | TAU | 3 | In the system of Greek numerals this letter has a value of 300 |
| 39% | GREATWALL | 9 | Longest built structure in the world as of 2021 |
| 38% | FDR | 3 | Prez whose election ushered in the era of the Fifth Party System |
| 38% | BASTION | 7 | Defensive structure at the base of a fortification |
| 38% | SKINTONE | 8 | Important factor in choosing the right shade of makeup: 2 wds. |
| 37% | XRAYDIFFRACTION | 15 | Process showing the structure of a crystal, in physics |
| 37% | TOWER | 5 | Structure climbed in the climactic scene of 58-Across |
| 37% | CALCIUM | 7 | Element important in the construction of corals |
| 37% | ONE | 3 | Number of stars in the Solar System |
| 37% | DYNE | 4 | Unit of force in the CGS system |
| 37% | EIGHT | 5 | Number of planets in the solar system |
| 37% | DRAM | 4 | Sixteenth of an ounce in the avoirdupois system of weights |
| 37% | REMUS | 5 | Important player in the founding-of-Rome story |
| 37% | SAMOTHRACE | 10 | Largely mountainous island in the Aegean Sea; an important centre of worship in ancient times |
| 36% | JAW | 3 | One of the structures in the mouth that helps you chew |
| 36% | OCTAL | 5 | Kind of number system in which 7 is the highest digit |
| 36% | LTR | 3 | Unit of volume in the metric system, for short |
| 36% | NINE | 4 | Number of planets in the solar system, before 2006 |
| 36% | KPH | 3 | Measure of speed, in the metric system: Abbr. |
| 36% | GITRACT | 7 | Part of the digestive system, in brief |
| 36% | KAVALA | 6 | Port in NE Greece; an important Macedonian fortress of the Byzantine empire |
| 36% | GALAXY | 6 | "Guardians of the ___," superhero film with an interstellar system in its title |