| Word | Definitions | Synonyms |
|---|---|---|
| arcsin | (noun) the inverse function of the sine; the angle that has a sine equal to a given number | Synonyms: arc sine, arcsine, inverse sine |
| tocsin | (noun) a bell used to sound an alarm | Synonyms: warning bell |
| (noun) the sound of an alarm (usually a bell) | Synonyms: alarm bell |