In an endothermic reaction, the opposite happens. In this reaction, heat is absorbed. Or more exactly, heat is required to complete the reaction. Photosynthesis in plants is a chemical endothermic reaction. In this process, the chloroplasts in the leaves absorb the sunlight.
Martial arts. Martial arts are codified systems and traditions of combat practices, which are practiced for a number of reasons: as self-defense, military and law enforcement applications, mental and spiritual development; as well as entertainment and the preservation of a nation's intangible cultural heritage.
See more synonyms on Thesaurus.com. noun. 1. Often, martial arts. any of the traditional forms of Asian self-defense or combat that utilize physical skill and coordination without weapons, as karate, aikido, judo, or kung fu, often practiced as sport. This sort of âshortcutâ is frowned upon in the martial arts community.