beneficial

Etymology

From Late Latin beneficiālis (“beneficial”), from Latin beneficium (“benefit, favor, kindness”).

adj

1. Helpful or good to something or someone.
   Recycling and reusing garbage can be beneficial to the environment.
   Mostly, the microbiome is beneficial. It helps with digestion and enables people to extract a lot more calories from their food than would otherwise be possible. Research over the past few years, however, has implicated it in diseases from atherosclerosis to asthma to autism. 2013-06-29, “A punch in the gut”, in The Economist, volume 407, number 8842, pages 72–3
2. Relating to a benefice.

noun

1. Something that provides a benefit.
   Daytime temperatures may be too hot for just-released beneficials, and birds and other predators are out in full force during the day. 1997, Insect Control Guide, volume 9, Meister Publishing, page 29