from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. hydrogen peroxide
from the GNU version of the Collaborative International Dictionary of English
- n. A compound formerly supposed to be modification of oxygen, but now known to be hydrogen dioxide; -- so called because apparently antagonistic to ozone, converting it into ordinary oxygen.
from The Century Dictionary and Cyclopedia
- n. A substance, formerly believed to be a modification of oxygen, whose chief peculiarity is that it combines with ozone and reduces it to ordinary oxygen. It has been proved to be hydrogen dioxid, H2O2.
anti- + ozone, because it was apparently antagonistic to ozone, converting it into ordinary oxygen. (Wiktionary)