helioseismologicaladj.
/ˌhiːlɪəʊsʌɪzməˈlɒdʒᵻkl/, U.S. /ˈˌhiliəˌsaɪzməˈlɑdʒək(ə)l/ Astronomy.
Of or relating to helioseismology.
ΚΠ
1983 Nature 25 Aug. 690/3 Helioseismological studies are still in their infancy, but it is already evident that the powerful tool that is being forged can be used elsewhere.
1992 S. P. Maran Astron. & Astrophysics Encycl. 871/2 Torsional oscillations have been observed on the Sun, but thus far they have not been employed in any helioseismological studies.
2001 Astron. & Astrophysics 371 718 Analyses of helioseismological observations seem to suggest the presence of two new phenomena connected with the dynamics of the solar convective zone.
This is a new entry (OED Third Edition, September 2002; most recently modified version published online March 2022).
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adj.1983