H substance

(redirected from released substance)
Also found in: Encyclopedia.

H sub·stance

designation given by Thomas Lewis to a diffusible substance in skin, indistinguishable in action from histamine, liberated by injury and causes the triple response.
Synonym(s): released substance
References in periodicals archive ?
Web-based e-learning course providing in-depth training on topics such as chemical inventory management, the technical identification of substances used in preparations and articles with intentionally released substances of concern, tonnage and Substances of Very High Concern (SVHC) concentration calculation.
For that reason, we examined the Hazardous Substances Emergency Events Surveillance (HSEES) system data to identify frequent locations, released substances, and factors contributing to short-term chemical exposures associated with adverse health consequences experienced by children.
The number of mercury events captured by the HSEES system has been increasing since 1995, and in 1998 mercury was one of the 10 most commonly released substances reported to HSEES.
Defence chiefs sprayed and released substances in London and on the South coast during the Sixties and Seventies.