Clay
The triliteral root ṭā yā nūn (ط ي ن) occurs in the Quran 12 times.
Psychophysiology is the study of the relationship between physiological signals recorded from the body and brain to mental processes and disorders. These biological signals may be generated by activity of organs in the body or by muscle activity.
in Quran
(23:12) We have created humans from an extract of clay (Arab. طِينٍ, ṭīnin).
(17:61), (38:71), (7:12), (37:11)
See Also
The triliteral root ṣād lām ṣād lām (ص ل ص ل) occurs in the Quran 4 times.