Plain English Meaning
A French company that builds aircraft engines which burn jet fuel instead of avgas, similar in principle to a diesel engine in a car.
Full Definition
A French aircraft engine manufacturer that produces compression-ignition (diesel) aircraft engines designed to run on jet fuel rather than aviation gasoline. SMA engines are used in certain general aviation aircraft as an alternative to traditional spark-ignition reciprocating engines.
Context Anchor
Seen in discussions of reciprocating aircraft engines, especially when comparing spark-ignition gasoline engines with diesel-type aircraft engines.