Library / English Dictionary

ANTIOXIDANT

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides

Classified under:

Nouns denoting substances

Hypernyms ("antioxidant" is a kind of...):

inhibitor (a substance that retards or stops an activity)

Hyponyms (each of the following is a kind of "antioxidant"):

glutathione peroxidase (an enzyme in the body that is a powerful scavenger of free radicals)

atomic number 34; Se; selenium (a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite))

carotenoid (any of a class of highly unsaturated yellow to red pigments occurring in plants and animals)

rust inhibitor (antioxidant that inhibits the formation of rust)

beta-naphthol (an isomer of naphthol used in rubber as an antioxidant)

E; tocopherol; vitamin E (a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body)

ascorbic acid; C; vitamin C (a vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy)

Credits

 Context examples: 

Vegetables and fruits are rich sources of antioxidants.

(Antioxidants, NIH: National Center for Complementary and Alternative Medicine)

A dietary supplement containing extract from the medicinal fungus Antrodia cinnamomea with potential antiangiogenic, hepatoprotective and antioxidant activities.

(Antrodia cinnamomea Supplement, NCI Thesaurus)

Treatment with antioxidants in order to protect cells against damage caused by oxygen-free radicals.

(Antioxidants Therapy, NCI Thesaurus)

The powder form of the cooked navy bean with potential antioxidant and chemopreventive activities.

(Navy Bean Powder, NCI Thesaurus)

NDGA is an antioxidant, and it may block certain enzymes needed for tumor growth.

(NDGA, NCI Dictionary)

A disturbance in the prooxidant-antioxidant balance in favor of the former, leading to potential damage.

(Oxidative stress, NCI Thesaurus)

Antioxidant levels are usually measured in blood plasma.

(Oxidative stress, NCI Dictionary)

Electrophilic compounds, xenobiotics and antioxidants are sources of reactive oxygen species, creating oxidative stress that can harm cells.

(Oxidative Stress Pathway, NCI Thesaurus/BIOCARTA)

A derivative of pyridoxyl ethyldiamine (PLED) and mimetic of the human mitochondrial manganese superoxide dismutase (MnSOD), with antioxidant, metal chelating and potential chemoprotective activities.

(PLED-based MnSOD Mimetic, NCI Thesaurus)

An oral preparation of the flavonoid silybin with potential antioxidant and chemopreventive activities.

(Phosphatidylcholine-Bound Silybin, NCI Thesaurus)