radioprotectantadj.n.
/ˌreɪdɪəʊprəˈtɛkt(ə)nt/, U.S. /ˌreɪdioʊprəˈtɛktnt/ Biology and Medicine.
A. adj.
= radioprotective adj.
ΘΚΠ
the world > action or operation > safety > protection or defence > [adjective] > affording protection or defence > from radiation
radioprotective1955
radioprotectant1960
1960 Radiation Res. 13 392 Anoxia is known to be radioprotectant.
1965 Proc. National Acad. Sci. U.S.A. 53 1369 Intravenous administration of..antiemetic, analeptic, radio-protectant, or vasopressor drugs.
2006 Plain Dealer (Cleveland, Ohio) (Nexis) 10 Nov. c1 A contract resulting from this program would support further development of our line of radioprotectant drugs.
B. n.
= radioprotector n.
ΚΠ
1960 Radiation Res. 13 381 β-Mercaptoethylamine (MEA), one of the most promising radioprotectants, is the simplest molecule in the sulfhydryl protectant series.
1984 Jrnl. Medicinal Chem. 27 1749/1 Radioprotectants required for the protection of normal tissues in cancer patients undergoing radiotherapy.
2002 Space Radiation Cancer Risk Projections for Explor. Missions (NASA) iv. 38 It is not known if radioprotectants developed for low-LET [sc. linear energy transfer] radiation would be effective for heavy ions and neutrons.
This is a new entry (OED Third Edition, March 2011; most recently modified version published online March 2022).
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adj.n.1960