| Answer | Crossword Clue |
|---|---|
| FOCALPOINT | Where rays converge |
| foci | FOCUS, a point in which rays converge |
| focal | pertaining to a focus (a point in which rays converge) |
| focus | a point in which rays converge / to bring or adjust to a point |
| aberration | The failure of rays to converge at one focus because of limitations or defects in a lens or mirror |
| aberrations | The failure of rays to converge at one focus because of limitations or defects in a lens or mirror |
| foci | a point at which rays (as of light, heat, or sound) converge or from which they diverge or appear to diverge |
