(historical) A bell rung to signal danger or emergency. / A bell which is rung to indicate a pre-arranged time, especially to mark a desired moment for waking up, performing a specific action etc.

(figuratively, usually in the plural) A sudden awareness of danger. / Used other than figuratively or idiomatically: see alarm, bell.

(biochemistry) Any endogenous substance that signals tissue and cell damage

plural of alarm clock

plural of burglar alarm

The state or quality of being alarming.

Without the use of the larynx.

(risk management) Initialism of as low as reasonably practicable.

plural of alarmone

(biochemistry) An intracellular signal molecule produced due to harsh environmental factors, and serving to regulate the gene expression at transcription level.