Complex sentence: The term "Light Emitting Ceramic" or "LEC" is sometimes used to describe ceramic discharge metal-halide grow lights in general, though that term is actually the registered trademark of a specific brand of ceramic discharge metal halide light.
Split into simpler sentences: The term "Light Emitting Ceramic" or "LEC" is not the proper term. It's is actually the registered trademark of a specific brand of ceramic discharge metal halide light.