gyújtó

Gyújtó is a Hungarian noun and adjective derived from the verb gyújtani, meaning to ignite. In technical contexts, gyújtó refers to any device or substance that initiates combustion in a fuel or propellant. The ignition source can be electrical, chemical, or mechanical, and it may operate to start a flame, spark, or hot surface that ignites the mixture.

In automotive and mechanical engineering, gyújtó often appears in compound terms. Gyújtógyertya is the spark plug, a component of spark-ignition engines that produces a spark to ignite the air–fuel mixture. Gyújtórendszer denotes the ignition system, comprising components such as coil, distributor, wires, and control electronics. In pyrotechnics, gyújtóeszköz or gyújtóelem describes an igniter used to initiate a pyrotechnic composition, while a fuse or primer might be described with related terms.

The word can also be used metaphorically in Hungarian to describe something incendiary or provocatively persuasive, as in gyújtó beszéd (incendiary speech) or gyújtó hatás (incendiary effect).

Etymology: derived from gyújtani 'to ignite' with the agent-noun suffix -ó, yielding "one that ignites" or "igniting."