magneto
UK[mæɡˈniːtəʊ]US[mæɡˈniːtoʊ]
n
a small electric generator that uses permanent magnets to produce an alternating current, especially one used to provide the spark in the ignition system of an internal-combustion engine.
Morpheme Breakdown
magnet
o
magnet
magnetic
o
suffix
Etymology
the word 'magneto' is a 19th-century shortening of the compound 'magneto-electric machine'. its core component, 'magnet', traces its lineage to ancient greek, where 'magnēs lithos' referred to the mysterious 'stone of magnesia', a naturally magnetic lodestone. the suffix '-o' is a common formative in scientific and technical nomenclature, borrowed via latin and other european languages to denote instruments or devices. thus, the term's literal construction, 'magnetic device', perfectly encapsulates its function: a machine that generates electricity through the principle of magnetism, specifically for applications like engine ignition.
Analysis
Structure: magnet (magnetic) + o (suffix)
- magnet: from latin magnes, magnet- (lodestone), from greek magnēs lithos (stone of magnesia), referring to a region in asia minor. functions as the core root denoting magnetic properties.
- o: a suffix of greek origin, often used in english to form nouns from other parts of speech (e.g., dynamo, octavo). in this word, it functions to create a noun denoting a device or instrument.
Examples
the vintage motorcycle's engine relied on a magneto for its spark.
he carefully cleaned the contacts on the aircraft's magneto.
the failure of the magneto was the cause of the engine's sudden stop.