| Answer | Crossword Clue |
|---|---|
| SCHWA | Sound represented by an upside-down "e" |
| SCHWA | Vowel sound represented by an upside-down "e" |
| dels | differential operator, represented by an upside-down triangle symbol |
| del | differential operator, represented by an upside-down triangle symbol |
| SCHWA | Sound symbolized by an inverted e |
| kymographs | An instrument for recording variations in pressure, e.g., in sound waves or in blood within blood vessels, by the trace of a stylus on a rotating cylinder |
| kymograph | An instrument for recording variations in pressure, e.g., in sound waves or in blood within blood vessels, by the trace of a stylus on a rotating cylinder |
