radioisotopicadj.
/ˌreɪdɪəʊˌʌɪsə(ʊ)ˈtɒpɪk/, U.S. /ˌreɪdioʊˌaɪsəˈtɑpɪk/, /ˌreɪdioʊˌaɪsoʊˈtɑpɪk/ Science.
Of or relating to radioisotopes; involving radioisotopes.
ΘΚΠ
the world > matter > physics > atomic nucleus > radioactive isotope > [adjective]
radioisotopic1949
1949 Science 22 Apr. 410/1 This book fails to qualify as a bible for the beginner in radioisotopic research.
1970 Nature 24 Oct. 383/1 Radioisotopic tracer experiments have established that carbonate from seawater is incorporated into the skeleton by many corals.
1991 G. Greer Change vii. 164 Hormonal activity can be measured in various ways, by radioisotopic tracer studies, by taking blood from peripheral veins, [etc.].
1993 New Scientist 15 May 17/2 Carl Swisher III..has used argon radioisotopic dating..to work out the age of volcanic ash found in Argentinian rocks containing dinosaur fossils.
1997 G. S. Helfman et al. Diversity of Fishes x. 140/1 Radioisotopic and otolith analyses indicate that rougheye rockfish (Sebastes aleutianus) live for 140 years.
Derivatives
ˌradioisoˈtopically adv. with a radioisotope; by means of a radioisotopic method.
ΘΚΠ
the world > matter > physics > atomic nucleus > radioactive isotope > [adverb]
isotopically1954
radioisotopically1955
1955 Amer. Jrnl. Med. 18 307/2 Perhaps more decisive evidence will be drawn from autoradiographic studies of kidneys from animals to which radioisotopically labelled proteins have been administered.
1990 Blood 75 2185 The accumulation of 111In-platelets and 125I-fibrinogen/fibrin was measured radioisotopically.
2000 D. Fossum et al. Discov. & Innovation p. xxxiii The possibility of using radioisotopically altered antibodies and neutron radiotherapy to treat cancer.
This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).
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adj.1949